# Amazon EC2 Construct Library

The `aws-cdk-lib/aws-ec2` package contains primitives for setting up networking and
instances.

```ts
import * as ec2 from 'aws-cdk-lib/aws-ec2';
```

## VPC

Most projects need a Virtual Private Cloud to provide security by means of
network partitioning. This is achieved by creating an instance of
[`Vpc`](/v2/docs/aws-cdk-lib.aws_ec2.Vpc):

```ts
const vpc = new ec2.Vpc(this, 'VPC');
```

All default constructs require EC2 instances to be launched inside a VPC, so
you should generally start by defining a VPC whenever you need to launch
instances for your project.

### Subnet Types

A VPC consists of one or more subnets that instances can be placed into. CDK
distinguishes three different subnet types:

* **Public (`SubnetType.PUBLIC`)** - public subnets connect directly to the Internet using an
  Internet Gateway. If you want your instances to have a public IP address
  and be directly reachable from the Internet, you must place them in a
  public subnet.
* **Private with Internet Access (`SubnetType.PRIVATE_WITH_EGRESS`)** - instances in private subnets are not directly routable from the
  Internet, and you must provide a way to connect out to the Internet.
  By default, a NAT gateway is created in every public subnet for maximum availability. Be
  aware that you will be charged for NAT gateways.
  Alternatively you can set `natGateways:0` and provide your own egress configuration (i.e through Transit Gateway)
* **Isolated (`SubnetType.PRIVATE_ISOLATED`)** - isolated subnets do not route from or to the Internet, and
  as such do not require NAT gateways. They can only connect to or be
  connected to from other instances in the same VPC. A default VPC configuration
  will not include isolated subnets,

A default VPC configuration will create public and **private** subnets. However, if
`natGateways:0` **and** `subnetConfiguration` is undefined, default VPC configuration
will create public and **isolated** subnets. See [*Advanced Subnet Configuration*](#advanced-subnet-configuration)
below for information on how to change the default subnet configuration.

Constructs using the VPC will "launch instances" (or more accurately, create
Elastic Network Interfaces) into one or more of the subnets. They all accept
a property called `subnetSelection` (sometimes called `vpcSubnets`) to allow
you to select in what subnet to place the ENIs, usually defaulting to
*private* subnets if the property is omitted.

If you would like to save on the cost of NAT gateways, you can use
*isolated* subnets instead of *private* subnets (as described in Advanced
*Subnet Configuration*). If you need private instances to have
internet connectivity, another option is to reduce the number of NAT gateways
created by setting the `natGateways` property to a lower value (the default
is one NAT gateway per availability zone). Be aware that this may have
availability implications for your application.

[Read more about
subnets](https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html).

### Control over availability zones

By default, a VPC will spread over at most 3 Availability Zones available to
it. To change the number of Availability Zones that the VPC will spread over,
specify the `maxAzs` property when defining it.

The number of Availability Zones that are available depends on the *region*
and *account* of the Stack containing the VPC. If the [region and account are
specified](https://docs.aws.amazon.com/cdk/latest/guide/environments.html) on
the Stack, the CLI will [look up the existing Availability
Zones](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#using-regions-availability-zones-describe)
and get an accurate count. The result of this operation will be written to a file
called `cdk.context.json`. You must commit this file to source control so
that the lookup values are available in non-privileged environments such
as CI build steps, and to ensure your template builds are repeatable.

If region and account are not specified, the stack
could be deployed anywhere and it will have to make a safe choice, limiting
itself to 2 Availability Zones.

Therefore, to get the VPC to spread over 3 or more availability zones, you
must specify the environment where the stack will be deployed.

You can gain full control over the availability zones selection strategy by overriding the Stack's [`get availabilityZones()`](https://github.com/aws/aws-cdk/blob/main/packages/@aws-cdk/core/lib/stack.ts) method:

```text
// This example is only available in TypeScript

class MyStack extends Stack {

  constructor(scope: Construct, id: string, props?: StackProps) {
    super(scope, id, props);

    // ...
  }

  get availabilityZones(): string[] {
    return ['us-west-2a', 'us-west-2b'];
  }

}
```

Note that overriding the `get availabilityZones()` method will override the default behavior for all constructs defined within the Stack.

### Choosing subnets for resources

When creating resources that create Elastic Network Interfaces (such as
databases or instances), there is an option to choose which subnets to place
them in. For example, a VPC endpoint by default is placed into a subnet in
every availability zone, but you can override which subnets to use. The property
is typically called one of `subnets`, `vpcSubnets` or `subnetSelection`.

The example below will place the endpoint into two AZs (`us-east-1a` and `us-east-1c`),
in Isolated subnets:

```ts
declare const vpc: ec2.Vpc;

new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
  vpc,
  service: new ec2.InterfaceVpcEndpointService('com.amazonaws.vpce.us-east-1.vpce-svc-uuddlrlrbastrtsvc', 443),
  subnets: {
    subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
    availabilityZones: ['us-east-1a', 'us-east-1c']
  }
});
```

You can also specify specific subnet objects for granular control:

```ts
declare const vpc: ec2.Vpc;
declare const subnet1: ec2.Subnet;
declare const subnet2: ec2.Subnet;

new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
  vpc,
  service: new ec2.InterfaceVpcEndpointService('com.amazonaws.vpce.us-east-1.vpce-svc-uuddlrlrbastrtsvc', 443),
  subnets: {
    subnets: [subnet1, subnet2]
  }
});
```

Which subnets are selected is evaluated as follows:

* `subnets`: if specific subnet objects are supplied, these are selected, and no other
  logic is used.
* `subnetType`/`subnetGroupName`: otherwise, a set of subnets is selected by
  supplying either type or name:
  * `subnetType` will select all subnets of the given type.
  * `subnetGroupName` should be used to distinguish between multiple groups of subnets of
    the same type (for example, you may want to separate your application instances and your
    RDS instances into two distinct groups of Isolated subnets).
  * If neither are given, the first available subnet group of a given type that
    exists in the VPC will be used, in this order: Private, then Isolated, then Public.
    In short: by default ENIs will preferentially be placed in subnets not connected to
    the Internet.
* `availabilityZones`/`onePerAz`: finally, some availability-zone based filtering may be done.
  This filtering by availability zones will only be possible if the VPC has been created or
  looked up in a non-environment agnostic stack (so account and region have been set and
  availability zones have been looked up).
  * `availabilityZones`: only the specific subnets from the selected subnet groups that are
    in the given availability zones will be returned.
  * `onePerAz`: per availability zone, a maximum of one subnet will be returned (Useful for resource
    types that do not allow creating two ENIs in the same availability zone).
* `subnetFilters`: additional filtering on subnets using any number of user-provided filters which
  extend [`SubnetFilter`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetFilter).  The following methods on the [`SubnetFilter`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetFilter) class can be used to create
  a filter:
  * `byIds`: chooses subnets from a list of ids
  * `availabilityZones`: chooses subnets in the provided list of availability zones
  * `onePerAz`: chooses at most one subnet per availability zone
  * `containsIpAddresses`: chooses a subnet which contains *any* of the listed ip addresses
  * `byCidrMask`: chooses subnets that have the provided CIDR netmask
  * `byCidrRanges`: chooses subnets which are inside any of the specified CIDR ranges

### Using Regional NAT Gateways

[Regional NAT Gateways](https://docs.aws.amazon.com/vpc/latest/userguide/nat-gateways-regional.html) provide automatic multi-AZ redundancy with a single gateway that scales across availability zones.
Unlike zonal NAT gateways, a regional NAT gateway does not require public subnets and is created at the VPC level.

```ts
// Basic usage
// Creates a single Regional NAT Gateway for the VPC and automatically allocate Elastic IPs
new ec2.Vpc(this, 'Vpc', {
  natGatewayProvider: ec2.NatProvider.regionalGateway(),
});
```

You can specify an existing EIP from a [`CfnEIP`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEIP) resource or an allocation ID:

```ts
const eip = new ec2.CfnEIP(this, 'NatEip');

new ec2.Vpc(this, 'Vpc1', {
  natGatewayProvider: ec2.NatProvider.regionalGateway({
    eip,
  }),
});

new ec2.Vpc(this, 'Vpc2', {
  natGatewayProvider: ec2.NatProvider.regionalGateway({
    allocationId: eip.attrAllocationId,
  }),
});
```

For manual control over AZ coverage and EIP allocation, use `availabilityZoneAddresses`:

```ts
const eip1 = new ec2.CfnEIP(this, 'NatEip1');
const eip2 = new ec2.CfnEIP(this, 'NatEip2');

new ec2.Vpc(this, 'Vpc', {
  availabilityZones: ['us-east-1a', 'us-east-1b'],
  natGatewayProvider: ec2.NatProvider.regionalGateway({
    availabilityZoneAddresses: [
      { allocationIds: [eip1.attrAllocationId], availabilityZone: 'us-east-1a' },
      { allocationIds: [eip2.attrAllocationId], availabilityZone: 'us-east-1b' },
    ],
  }),
});
```

Each Availability Zone may only appear once in `availabilityZoneAddresses`.

In this manual mode the gateway only serves the listed Availability Zones and does not
expand to other zones automatically, so every Availability Zone that contains a private
subnet must be listed. When the zone names are known at synthesis time, a private subnet
in an unlisted zone is rejected with an error. Entries that use `availabilityZoneId` or
unresolved tokens cannot be checked at synthesis time.

The `natGateways` property is ignored when using a Regional NAT Gateway, since a single
gateway already covers every Availability Zone. Values below 1, as well as unresolved
tokens, are rejected because they would silently disable the gateway you explicitly
configured; omit `natGatewayProvider` instead if you do not want a NAT gateway.

You can also configure the maximum drain duration:

```ts
new ec2.Vpc(this, 'Vpc', {
  natGatewayProvider: ec2.NatProvider.regionalGateway({
    maxDrainDuration: Duration.minutes(10),
  }),
});
```

### Using NAT instances

By default, the [`Vpc`](/v2/docs/aws-cdk-lib.aws_ec2.Vpc) construct will create NAT *gateways* for you, which
are managed by AWS. If you would prefer to use your own managed NAT
*instances* instead, specify a different value for the `natGatewayProvider`
property, as follows:

The construct will automatically selects the latest version of Amazon Linux 2023.
If you prefer to use a custom AMI, use `machineImage:
MachineImage.genericLinux({ ... })` and configure the right AMI ID for the
regions you want to deploy to.

> **Warning**
> The NAT instances created using this method will be **unmonitored**.
> They are not part of an Auto Scaling Group,
> and if they become unavailable or are terminated for any reason,
> will not be restarted or replaced.

By default, the NAT instances will route all traffic. To control what traffic
gets routed, pass a custom value for `defaultAllowedTraffic` and access the
`NatInstanceProvider.connections` member after having passed the NAT provider to
the VPC:

```ts
declare const instanceType: ec2.InstanceType;

const provider = ec2.NatProvider.instanceV2({
  instanceType,
  defaultAllowedTraffic: ec2.NatTrafficDirection.OUTBOUND_ONLY,
});
new ec2.Vpc(this, 'TheVPC', {
  natGatewayProvider: provider,
});
provider.connections.allowFrom(ec2.Peer.ipv4('1.2.3.4/8'), ec2.Port.HTTP);
```

You can also customize the characteristics of your NAT instances, including their security group,
as well as their initialization scripts:

```ts
declare const bucket: s3.Bucket;

const userData = ec2.UserData.forLinux();
userData.addCommands(
  ...ec2.NatInstanceProviderV2.DEFAULT_USER_DATA_COMMANDS,
  'echo "hello world!" > hello.txt',
  `aws s3 cp hello.txt s3://${bucket.bucketName}`,
);

const provider = ec2.NatProvider.instanceV2({
  instanceType: new ec2.InstanceType('t3.small'),
  creditSpecification: ec2.CpuCredits.UNLIMITED,
  defaultAllowedTraffic: ec2.NatTrafficDirection.NONE,
});

const vpc = new ec2.Vpc(this, 'TheVPC', {
  natGatewayProvider: provider,
  natGateways: 2,
});

const securityGroup = new ec2.SecurityGroup(this, 'SecurityGroup', { vpc });
    securityGroup.addEgressRule(ec2.Peer.anyIpv4(), ec2.Port.tcp(443));
for (const gateway of provider.gatewayInstances) {
  bucket.grants.write(gateway);
  gateway.addSecurityGroup(securityGroup);
}
```

```ts
    // Configure the `natGatewayProvider` when defining a Vpc
    const natGatewayProvider = ec2.NatProvider.instance({
      instanceType: new ec2.InstanceType('t3.small'),
    });

    const vpc = new ec2.Vpc(this, 'MyVpc', {
      natGatewayProvider,

      // The 'natGateways' parameter now controls the number of NAT instances
      natGateways: 2,
    });
```

The V1 `NatProvider.instance` construct will use the AWS official NAT instance AMI, which has already
reached EOL on Dec 31, 2023. For more information, see the following blog post:
[Amazon Linux AMI end of life](https://aws.amazon.com/blogs/aws/update-on-amazon-linux-ami-end-of-life/).

```ts
declare const instanceType: ec2.InstanceType;

const provider = ec2.NatProvider.instance({
  instanceType,
  defaultAllowedTraffic: ec2.NatTrafficDirection.OUTBOUND_ONLY,
});
new ec2.Vpc(this, 'TheVPC', {
  natGatewayProvider: provider,
});
provider.connections.allowFrom(ec2.Peer.ipv4('1.2.3.4/8'), ec2.Port.HTTP);
```

### Associate Public IP Address to NAT Instance

You can choose to associate public IP address to a NAT instance V2 by specifying `associatePublicIpAddress`
like the following:

```ts
const natGatewayProvider = ec2.NatProvider.instanceV2({
  instanceType: new ec2.InstanceType('t3.small'),
  associatePublicIpAddress: true,
});
```

In certain scenarios where the public subnet has set `mapPublicIpOnLaunch` to `false`, NAT instances does not
get public IP addresses assigned which would result in non-working NAT instance as NAT instance requires a public
IP address to enable outbound internet connectivity. Users can specify `associatePublicIpAddress` to `true` to
solve this problem.

### Ip Address Management

The VPC spans a supernet IP range, which contains the non-overlapping IPs of its contained subnets. Possible sources for this IP range are:

* You specify an IP range directly by specifying a CIDR
* You allocate an IP range of a given size automatically from AWS IPAM

By default the Vpc will allocate the `10.0.0.0/16` address range which will be exhaustively spread across all subnets in the subnet configuration. This behavior can be changed by passing an object that implements [`IIpAddresses`](/v2/docs/aws-cdk-lib.aws_ec2.IIpAddresses) to the `ipAddress` property of a Vpc. See the subsequent sections for the options.

Be aware that if you don't explicitly reserve subnet groups in `subnetConfiguration`, the address space will be fully allocated! If you predict you may need to add more subnet groups later, add them early on and set `reserved: true` (see the "Advanced Subnet Configuration" section for more information).

#### Specifying a CIDR directly

Use `IpAddresses.cidr` to define a Cidr range for your Vpc directly in code:

```ts
import { IpAddresses } from 'aws-cdk-lib/aws-ec2';

new ec2.Vpc(this, 'TheVPC', {
  ipAddresses: IpAddresses.cidr('10.0.1.0/20')
});
```

Space will be allocated to subnets in the following order:

* First, spaces is allocated for all subnets groups that explicitly have a `cidrMask` set as part of their configuration (including reserved subnets).
* Afterwards, any remaining space is divided evenly between the rest of the subnets (if any).

The argument to `IpAddresses.cidr` may not be a token, and concrete Cidr values are generated in the synthesized CloudFormation template.

#### Allocating an IP range from AWS IPAM

Amazon VPC IP Address Manager (IPAM) manages a large IP space, from which chunks can be allocated for use in the Vpc. For information on Amazon VPC IP Address Manager please see the [official documentation](https://docs.aws.amazon.com/vpc/latest/ipam/what-it-is-ipam.html). An example of allocating from AWS IPAM looks like this:

```ts
import { IpAddresses } from 'aws-cdk-lib/aws-ec2';

declare const pool: ec2.CfnIPAMPool;

new ec2.Vpc(this, 'TheVPC', {
  ipAddresses: IpAddresses.awsIpamAllocation({
    ipv4IpamPoolId: pool.ref,
    ipv4NetmaskLength: 18,
    defaultSubnetIpv4NetmaskLength: 24
  })
});
```

`IpAddresses.awsIpamAllocation` requires the following:

* `ipv4IpamPoolId`, the id of an IPAM Pool from which the VPC range should be allocated.
* `ipv4NetmaskLength`, the size of the IP range that will be requested from the Pool at deploy time.
* `defaultSubnetIpv4NetmaskLength`, the size of subnets in groups that don't have `cidrMask` set.

With this method of IP address management, no attempt is made to guess at subnet group sizes or to exhaustively allocate the IP range. All subnet groups must have an explicit `cidrMask` set as part of their subnet configuration, or `defaultSubnetIpv4NetmaskLength` must be set for a default size. If not, synthesis will fail and you must provide one or the other.

### Dual Stack configuration

To allocate both IPv4 and IPv6 addresses in your VPC, you can configure your VPC to have a dual stack protocol.

```ts
new ec2.Vpc(this, 'DualStackVpc', {
  ipProtocol: ec2.IpProtocol.DUAL_STACK,
})
```

By default, a dual stack VPC will create an Amazon provided IPv6 /56 CIDR block associated to the VPC. It will then assign /64 portions of the block to each subnet. For each subnet, auto-assigning an IPv6 address will be enabled, and auto-asigning a public IPv4 address will be disabled. An egress only internet gateway will be created for `PRIVATE_WITH_EGRESS` subnets, and IPv6 routes will be added for IGWs and EIGWs.

Disabling the auto-assigning of a public IPv4 address by default can avoid the cost of public IPv4 addresses starting 2/1/2024. For use cases that need an IPv4 address, the `mapPublicIpOnLaunch` property in `subnetConfiguration` can be set to auto-assign the IPv4 address. Note that private IPv4 address allocation will not be changed.

See [Advanced Subnet Configuration](#advanced-subnet-configuration) for all IPv6 specific properties.

### Reserving availability zones

There are situations where the IP space for availability zones will
need to be reserved. This is useful in situations where availability
zones would need to be added after the vpc is originally deployed,
without causing IP renumbering for availability zones subnets. The IP
space for reserving `n` availability zones can be done by setting the
`reservedAzs` to `n` in vpc props, as shown below:

```ts
const vpc = new ec2.Vpc(this, 'TheVPC', {
  cidr: '10.0.0.0/21',
  maxAzs: 3,
  reservedAzs: 1,
});
```

In the example above, the subnets for reserved availability zones is not
actually provisioned but its IP space is still reserved. If, in the future,
new availability zones needs to be provisioned, then we would decrement
the value of `reservedAzs` and increment the `maxAzs` or `availabilityZones`
accordingly. This action would not cause the IP address of subnets to get
renumbered, but rather the IP space that was previously reserved will be
used for the new availability zones subnets.

### Advanced Subnet Configuration

If the default VPC configuration (public and private subnets spanning the
size of the VPC) don't suffice for you, you can configure what subnets to
create by specifying the `subnetConfiguration` property. It allows you
to configure the number and size of all subnets. Specifying an advanced
subnet configuration could look like this:

```ts
const vpc = new ec2.Vpc(this, 'TheVPC', {
  // 'IpAddresses' configures the IP range and size of the entire VPC.
  // The IP space will be divided based on configuration for the subnets.
  ipAddresses: ec2.IpAddresses.cidr('10.0.0.0/21'),

  // 'maxAzs' configures the maximum number of availability zones to use.
  // If you want to specify the exact availability zones you want the VPC
  // to use, use `availabilityZones` instead.
  maxAzs: 3,

  // 'subnetConfiguration' specifies the "subnet groups" to create.
  // Every subnet group will have a subnet for each AZ, so this
  // configuration will create `3 groups × 3 AZs = 9` subnets.
  subnetConfiguration: [
    {
      // 'subnetType' controls Internet access, as described above.
      subnetType: ec2.SubnetType.PUBLIC,

      // 'name' is used to name this particular subnet group. You will have to
      // use the name for subnet selection if you have more than one subnet
      // group of the same type.
      name: 'Ingress',

      // 'cidrMask' specifies the IP addresses in the range of individual
      // subnets in the group. Each of the subnets in this group will contain
      // `2^(32 address bits - 24 subnet bits) - 2 reserved addresses = 254`
      // usable IP addresses.
      //
      // If 'cidrMask' is left out the available address space is evenly
      // divided across the remaining subnet groups.
      cidrMask: 24,
    },
    {
      cidrMask: 24,
      name: 'Application',
      subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS,
    },
    {
      cidrMask: 28,
      name: 'Database',
      subnetType: ec2.SubnetType.PRIVATE_ISOLATED,

      // 'reserved' can be used to reserve IP address space. No resources will
      // be created for this subnet, but the IP range will be kept available for
      // future creation of this subnet, or even for future subdivision.
      reserved: true
    }
  ],
});
```

The example above is one possible configuration, but the user can use the
constructs above to implement many other network configurations.

The [`Vpc`](/v2/docs/aws-cdk-lib.aws_ec2.Vpc) from the above configuration in a Region with three
availability zones will be the following:

Subnet Name       |Type      |IP Block      |AZ|Features
------------------|----------|--------------|--|--------
IngressSubnet1    |`PUBLIC`  |`10.0.0.0/24` |#1|NAT Gateway
IngressSubnet2    |`PUBLIC`  |`10.0.1.0/24` |#2|NAT Gateway
IngressSubnet3    |`PUBLIC`  |`10.0.2.0/24` |#3|NAT Gateway
ApplicationSubnet1|`PRIVATE` |`10.0.3.0/24` |#1|Route to NAT in IngressSubnet1
ApplicationSubnet2|`PRIVATE` |`10.0.4.0/24` |#2|Route to NAT in IngressSubnet2
ApplicationSubnet3|`PRIVATE` |`10.0.5.0/24` |#3|Route to NAT in IngressSubnet3
DatabaseSubnet1   |`ISOLATED`|`10.0.6.0/28` |#1|Only routes within the VPC
DatabaseSubnet2   |`ISOLATED`|`10.0.6.16/28`|#2|Only routes within the VPC
DatabaseSubnet3   |`ISOLATED`|`10.0.6.32/28`|#3|Only routes within the VPC

#### Dual Stack Configurations

Here is a break down of IPv4 and IPv6 specific `subnetConfiguration` properties in a dual stack VPC:

```ts
const vpc = new ec2.Vpc(this, 'TheVPC', {
  ipProtocol: ec2.IpProtocol.DUAL_STACK,

  subnetConfiguration: [
    {
      // general properties
      name: 'Public',
      subnetType: ec2.SubnetType.PUBLIC,
      reserved: false,

      // IPv4 specific properties
      mapPublicIpOnLaunch: true,
      cidrMask: 24,

      // new IPv6 specific property
      ipv6AssignAddressOnCreation: true,
    },
  ],
});
```

The property `mapPublicIpOnLaunch` controls if a public IPv4 address will be assigned. This defaults to `false` for dual stack VPCs to avoid inadvertant costs of having the public address. However, a public IP must be enabled (or otherwise configured with BYOIP or IPAM) in order for services that rely on the address to function.

The `ipv6AssignAddressOnCreation` property controls the same behavior for the IPv6 address. It defaults to true.

Using IPv6 specific properties in an IPv4 only VPC will result in errors.

### Accessing the Internet Gateway

If you need access to the internet gateway, you can get its ID like so:

```ts
declare const vpc: ec2.Vpc;

const igwId = vpc.internetGatewayId;
```

For a VPC with only `ISOLATED` subnets, this value will be undefined.

This is only supported for VPCs created in the stack - currently you're
unable to get the ID for imported VPCs. To do that you'd have to specifically
look up the Internet Gateway by name, which would require knowing the name
beforehand.

This can be useful for configuring routing using a combination of gateways:
for more information see [Routing](#routing) below.

### Disabling the creation of the default internet gateway

If you need to control the creation of the internet gateway explicitly,
you can disable the creation of the default one using the `createInternetGateway`
property:

```ts
const vpc = new ec2.Vpc(this, "VPC", {
  createInternetGateway: false,
  subnetConfiguration: [{
      subnetType: ec2.SubnetType.PUBLIC,
      name: 'Public',
    }]
});
```

#### Routing

It's possible to add routes to any subnets using the `addRoute()` method. If for
example you want an isolated subnet to have a static route via the default
Internet Gateway created for the public subnet - perhaps for routing a VPN
connection - you can do so like this:

```ts
const vpc = new ec2.Vpc(this, "VPC", {
  subnetConfiguration: [{
      subnetType: ec2.SubnetType.PUBLIC,
      name: 'Public',
    },{
      subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
      name: 'Isolated',
    }]
});

(vpc.isolatedSubnets[0] as ec2.Subnet).addRoute("StaticRoute", {
    routerId: vpc.internetGatewayId!,
    routerType: ec2.RouterType.GATEWAY,
    destinationCidrBlock: "8.8.8.8/32",
})
```

*Note that we cast to [`Subnet`](/v2/docs/aws-cdk-lib.aws_ec2.Subnet) here because the list of subnets only returns an
[`ISubnet`](/v2/docs/aws-cdk-lib.aws_ec2.ISubnet).*

### Reserving subnet IP space

There are situations where the IP space for a subnet or number of subnets
will need to be reserved. This is useful in situations where subnets would
need to be added after the vpc is originally deployed, without causing IP
renumbering for existing subnets. The IP space for a subnet may be reserved
by setting the `reserved` subnetConfiguration property to true, as shown
below:

```ts
const vpc = new ec2.Vpc(this, 'TheVPC', {
  natGateways: 1,
  subnetConfiguration: [
    {
      cidrMask: 26,
      name: 'Public',
      subnetType: ec2.SubnetType.PUBLIC,
    },
    {
      cidrMask: 26,
      name: 'Application1',
      subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS,
    },
    {
      cidrMask: 26,
      name: 'Application2',
      subnetType: ec2.SubnetType.PRIVATE_WITH_EGRESS,
      reserved: true,   // <---- This subnet group is reserved
    },
    {
      cidrMask: 27,
      name: 'Database',
      subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
    }
  ],
});
```

In the example above, the subnet for Application2 is not actually provisioned
but its IP space is still reserved. If in the future this subnet needs to be
provisioned, then the `reserved: true` property should be removed. Reserving
parts of the IP space prevents the other subnets from getting renumbered.

### Sharing VPCs between stacks

If you are creating multiple `Stack`s inside the same CDK application, you
can reuse a VPC defined in one Stack in another by simply passing the VPC
instance around:

```ts
/**
 * Stack1 creates the VPC
 */
class Stack1 extends cdk.Stack {
  public readonly vpc: ec2.Vpc;

  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    this.vpc = new ec2.Vpc(this, 'VPC');
  }
}

interface Stack2Props extends cdk.StackProps {
  vpc: ec2.IVpc;
}

/**
 * Stack2 consumes the VPC
 */
class Stack2 extends cdk.Stack {
  constructor(scope: cdk.App, id: string, props: Stack2Props) {
    super(scope, id, props);

    // Pass the VPC to a construct that needs it
    new ConstructThatTakesAVpc(this, 'Construct', {
      vpc: props.vpc,
    });
  }
}

const stack1 = new Stack1(app, 'Stack1');
const stack2 = new Stack2(app, 'Stack2', {
  vpc: stack1.vpc,
});
```

> Note: If you encounter an error like "Delete canceled. Cannot delete export ..."
> when using a cross-stack reference to a VPC, it's likely due to CloudFormation
> export/import constraints. In such cases, it's safer to use Vpc.fromLookup()
> in the consuming stack instead of directly referencing the VPC object, more details
> is provided in [Importing an existing VPC](#importing-an-existing-vpc). This
> avoids creating CloudFormation exports and gives more flexibility, especially
> when stacks need to be deleted or updated independently.

### Importing an existing VPC

If your VPC is created outside your CDK app, you can use `Vpc.fromLookup()`.
The CDK CLI will search for the specified VPC in the stack's region and
account, and import the subnet configuration. Looking up can be done by VPC
ID, but more flexibly by searching for a specific tag on the VPC.

Subnet types will be determined from the `aws-cdk:subnet-type` tag on the
subnet if it exists, or the presence of a route to an Internet Gateway
otherwise. Subnet names will be determined from the `aws-cdk:subnet-name` tag
on the subnet if it exists, or will mirror the subnet type otherwise (i.e.
a public subnet will have the name `"Public"`).

The result of the `Vpc.fromLookup()` operation will be written to a file
called `cdk.context.json`. You must commit this file to source control so
that the lookup values are available in non-privileged environments such
as CI build steps, and to ensure your template builds are repeatable.

Here's how `Vpc.fromLookup()` can be used:

```ts
const vpc = ec2.Vpc.fromLookup(stack, 'VPC', {
  // This imports the default VPC but you can also
  // specify a 'vpcName' or 'tags'.
  isDefault: true,
});
```

`Vpc.fromLookup` is the recommended way to import VPCs. If for whatever
reason you do not want to use the context mechanism to look up a VPC at
synthesis time, you can also use `Vpc.fromVpcAttributes`. This has the
following limitations:

* Every subnet group in the VPC must have a subnet in each availability zone
  (for example, each AZ must have both a public and private subnet). Asymmetric
  VPCs are not supported.
* All VpcId, SubnetId, RouteTableId, ... parameters must either be known at
  synthesis time, or they must come from deploy-time list parameters whose
  deploy-time lengths are known at synthesis time.

Using `Vpc.fromVpcAttributes()` looks like this:

```ts
const vpc = ec2.Vpc.fromVpcAttributes(this, 'VPC', {
  vpcId: 'vpc-1234',
  availabilityZones: ['us-east-1a', 'us-east-1b'],

  // Either pass literals for all IDs
  publicSubnetIds: ['s-12345', 's-67890'],

  // OR: import a list of known length
  privateSubnetIds: Fn.importListValue('PrivateSubnetIds', 2),

  // OR: split an imported string to a list of known length
  isolatedSubnetIds: Fn.split(',', ssm.StringParameter.valueForStringParameter(this, `MyParameter`), 2),
});
```

For each subnet group the import function accepts optional parameters for subnet
names, route table ids and IPv4 CIDR blocks. When supplied, the length of these
lists are required to match the length of the list of subnet ids, allowing the
lists to be zipped together to form [`ISubnet`](/v2/docs/aws-cdk-lib.aws_ec2.ISubnet) instances.

Public subnet group example (for private or isolated subnet groups, use the properties with the respective prefix):

```ts
const vpc = ec2.Vpc.fromVpcAttributes(this, 'VPC', {
  vpcId: 'vpc-1234',
  availabilityZones: ['us-east-1a', 'us-east-1b', 'us-east-1c'],
  publicSubnetIds: ['s-12345', 's-34567', 's-56789'],
  publicSubnetNames: ['Subnet A', 'Subnet B', 'Subnet C'],
  publicSubnetRouteTableIds: ['rt-12345', 'rt-34567', 'rt-56789'],
  publicSubnetIpv4CidrBlocks: ['10.0.0.0/24', '10.0.1.0/24', '10.0.2.0/24'],
});
```

The above example will create an [`IVpc`](/v2/docs/aws-cdk-lib.aws_ec2.IVpc) instance with three public subnets:

| Subnet id | Availability zone | Subnet name | Route table id | IPv4 CIDR   |
| --------- | ----------------- | ----------- | -------------- | ----------- |
| s-12345   | us-east-1a        | Subnet A    | rt-12345       | 10.0.0.0/24 |
| s-34567   | us-east-1b        | Subnet B    | rt-34567       | 10.0.1.0/24 |
| s-56789   | us-east-1c        | Subnet B    | rt-56789       | 10.0.2.0/24 |

### Restricting access to the VPC default security group

AWS Security best practices recommend that the [VPC default security group should
not allow inbound and outbound
traffic](https://docs.aws.amazon.com/securityhub/latest/userguide/ec2-controls.html#ec2-2).
When the `@aws-cdk/aws-ec2:restrictDefaultSecurityGroup` feature flag is set to
`true` (default for new projects) this will be enabled by default. If you do not
have this feature flag set you can either set the feature flag _or_ you can set
the `restrictDefaultSecurityGroup` property to `true`.

```ts
new ec2.Vpc(this, 'VPC', {
  restrictDefaultSecurityGroup: true,
});
```

If you set this property to `true` and then later remove it or set it to `false`
the default ingress/egress will be restored on the default security group.

## Allowing Connections

In AWS, all network traffic in and out of **Elastic Network Interfaces** (ENIs)
is controlled by **Security Groups**. You can think of Security Groups as a
firewall with a set of rules. By default, Security Groups allow no incoming
(ingress) traffic and all outgoing (egress) traffic. You can add ingress rules
to them to allow incoming traffic streams. To exert fine-grained control over
egress traffic, set `allowAllOutbound: false` on the [`SecurityGroup`](/v2/docs/aws-cdk-lib.aws_ec2.SecurityGroup), after
which you can add egress traffic rules.

You can manipulate Security Groups directly:

```ts
const mySecurityGroup = new ec2.SecurityGroup(this, 'SecurityGroup', {
  vpc,
  description: 'Allow ssh access to ec2 instances',
  allowAllOutbound: true   // Can be set to false
});
mySecurityGroup.addIngressRule(ec2.Peer.anyIpv4(), ec2.Port.tcp(22), 'allow ssh access from the world');
```

All constructs that create ENIs on your behalf (typically constructs that create
EC2 instances or other VPC-connected resources) will all have security groups
automatically assigned. Those constructs have an attribute called
**connections**, which is an object that makes it convenient to update the
security groups. If you want to allow connections between two constructs that
have security groups, you have to add an **Egress** rule to one Security Group,
and an **Ingress** rule to the other. The connections object will automatically
take care of this for you:

```ts
declare const loadBalancer: elbv2.ApplicationLoadBalancer;
declare const appFleet: autoscaling.AutoScalingGroup;
declare const dbFleet: autoscaling.AutoScalingGroup;

// Allow connections from anywhere
loadBalancer.connections.allowFromAnyIpv4(ec2.Port.HTTPS, 'Allow inbound HTTPS');

// The same, but an explicit IP address
loadBalancer.connections.allowFrom(ec2.Peer.ipv4('1.2.3.4/32'), ec2.Port.HTTPS, 'Allow inbound HTTPS');

// Allow connection between AutoScalingGroups
appFleet.connections.allowTo(dbFleet, ec2.Port.HTTPS, 'App can call database');
```

### Connection Peers

There are various classes that implement the connection peer part:

```ts
declare const appFleet: autoscaling.AutoScalingGroup;
declare const dbFleet: autoscaling.AutoScalingGroup;

// Simple connection peers
let peer = ec2.Peer.ipv4('10.0.0.0/16');
peer = ec2.Peer.anyIpv4();
peer = ec2.Peer.ipv6('::0/0');
peer = ec2.Peer.anyIpv6();
appFleet.connections.allowTo(peer, ec2.Port.HTTPS, 'Allow outbound HTTPS');
```

Any object that has a security group can itself be used as a connection peer:

```ts
declare const fleet1: autoscaling.AutoScalingGroup;
declare const fleet2: autoscaling.AutoScalingGroup;
declare const appFleet: autoscaling.AutoScalingGroup;

// These automatically create appropriate ingress and egress rules in both security groups
fleet1.connections.allowTo(fleet2, ec2.Port.HTTP, 'Allow between fleets');

appFleet.connections.allowFromAnyIpv4(ec2.Port.HTTP, 'Allow from load balancer');
```

A managed prefix list is also a connection peer:

```ts
declare const appFleet: autoscaling.AutoScalingGroup;

const prefixList = new ec2.PrefixList(this, 'PrefixList', { maxEntries: 10 });
appFleet.connections.allowFrom(prefixList, ec2.Port.HTTPS);
```

#### Rule Configuration Interfaces

The [`IPeer`](/v2/docs/aws-cdk-lib.aws_ec2.IPeer) interface provides type-safe methods for generating security group rule configurations.
The `toIngressRuleConfig()` and `toEgressRuleConfig()` methods return strongly-typed interfaces
instead of `any`, enabling better IDE autocompletion and compile-time type checking:

- [`IngressRuleConfig`](/v2/docs/aws-cdk-lib.aws_ec2.IngressRuleConfig): Configuration for ingress rules with properties like `cidrIp`, `cidrIpv6`,
  `sourcePrefixListId`, `sourceSecurityGroupId`, and `sourceSecurityGroupOwnerId`
- [`EgressRuleConfig`](/v2/docs/aws-cdk-lib.aws_ec2.EgressRuleConfig): Configuration for egress rules with properties like `cidrIp`, `cidrIpv6`,
  `destinationPrefixListId`, and `destinationSecurityGroupId`

### Port Ranges

The connections that are allowed are specified by port ranges. A number of classes provide
the connection specifier:

```ts
ec2.Port.tcp(80)
ec2.Port.HTTPS
ec2.Port.tcpRange(60000, 65535)
ec2.Port.allTcp()
ec2.Port.allIcmp()
ec2.Port.allIcmpV6()
ec2.Port.allTraffic()
```

> NOTE: Not all protocols have corresponding helper methods. In the absence of a helper method,
> you can instantiate [`Port`](/v2/docs/aws-cdk-lib.aws_ec2.Port) yourself with your own settings. You are also welcome to contribute
> new helper methods.

### Default Ports

Some Constructs have default ports associated with them. For example, the
listener of a load balancer does (it's the public port), or instances of an
RDS database (it's the port the database is accepting connections on).

If the object you're calling the peering method on has a default port associated with it, you can call
`allowDefaultPortFrom()` and omit the port specifier. If the argument has an associated default port, call
`allowDefaultPortTo()`.

For example:

```ts
declare const listener: elbv2.ApplicationListener;
declare const appFleet: autoscaling.AutoScalingGroup;
declare const rdsDatabase: rds.DatabaseCluster;

// Port implicit in listener
listener.connections.allowDefaultPortFromAnyIpv4('Allow public');

// Port implicit in peer
appFleet.connections.allowDefaultPortTo(rdsDatabase, 'Fleet can access database');
```

### Security group rules

By default, security group wills be added inline to the security group in the output cloud formation
template, if applicable.  This includes any static rules by ip address and port range.  This
optimization helps to minimize the size of the template.

In some environments this is not desirable, for example if your security group access is controlled
via tags. You can disable inline rules per security group or globally via the context key
`@aws-cdk/aws-ec2.securityGroupDisableInlineRules`.

```ts
const mySecurityGroupWithoutInlineRules = new ec2.SecurityGroup(this, 'SecurityGroup', {
  vpc,
  description: 'Allow ssh access to ec2 instances',
  allowAllOutbound: true,
  disableInlineRules: true
});
//This will add the rule as an external cloud formation construct
mySecurityGroupWithoutInlineRules.addIngressRule(ec2.Peer.anyIpv4(), ec2.Port.SSH, 'allow ssh access from the world');
```

### Importing an existing security group

If you know the ID and the configuration of the security group to import, you can use `SecurityGroup.fromSecurityGroupId`:

```ts
const sg = ec2.SecurityGroup.fromSecurityGroupId(this, 'SecurityGroupImport', 'sg-1234', {
  allowAllOutbound: true,
});
```

Alternatively, use lookup methods to import security groups if you do not know the ID or the configuration details. Method `SecurityGroup.fromLookupByName` looks up a security group if the security group ID is unknown.

```ts
const sg = ec2.SecurityGroup.fromLookupByName(this, 'SecurityGroupLookup', 'security-group-name', vpc);
```

If the security group ID is known and configuration details are unknown, use method `SecurityGroup.fromLookupById` instead. This method will lookup property `allowAllOutbound` from the current configuration of the security group.

```ts
const sg = ec2.SecurityGroup.fromLookupById(this, 'SecurityGroupLookup', 'sg-1234');
```

The result of `SecurityGroup.fromLookupByName` and `SecurityGroup.fromLookupById` operations will be
written to a file called `cdk.context.json`.
You must commit this file to source control so that the lookup values are available in non-privileged
environments such as CI build steps, and to ensure your template builds are repeatable.

### Cross Stack Connections

If you are attempting to add a connection from a peer in one stack to a peer in a different stack, sometimes it is necessary to ensure that you are making the connection in
a specific stack in order to avoid a cyclic reference. If there are no other dependencies between stacks then it will not matter in which stack you make
the connection, but if there are existing dependencies (i.e. stack1 already depends on stack2), then it is important to make the connection in the dependent stack (i.e. stack1).

Whenever you make a `connections` function call, the ingress and egress security group rules will be added to the stack that the calling object exists in.
So if you are doing something like `peer1.connections.allowFrom(peer2)`, then the security group rules (both ingress and egress) will be created in `peer1`'s Stack.

As an example, if we wanted to allow a connection from a security group in one stack (egress) to a security group in a different stack (ingress),
we would make the connection like:

**If Stack1 depends on Stack2**

```ts
// Stack 1
declare const stack1: Stack;
declare const stack2: Stack;

const sg1 = new ec2.SecurityGroup(stack1, 'SG1', {
  allowAllOutbound: false, // if this is `true` then no egress rule will be created
  vpc,
});

// Stack 2
const sg2 = new ec2.SecurityGroup(stack2, 'SG2', {
  allowAllOutbound: false, // if this is `true` then no egress rule will be created
  vpc,
});

// `connections.allowTo` on `sg1` since we want the
// rules to be created in Stack1
sg1.connections.allowTo(sg2, ec2.Port.tcp(3333));
```

In this case both the Ingress Rule for `sg2` and the Egress Rule for `sg1` will both be created
in `Stack 1` which avoids the cyclic reference.

**If Stack2 depends on Stack1**

```ts
// Stack 1
declare const stack1: Stack;
declare const stack2: Stack;

const sg1 = new ec2.SecurityGroup(stack1, 'SG1', {
  allowAllOutbound: false, // if this is `true` then no egress rule will be created
  vpc,
});

// Stack 2
const sg2 = new ec2.SecurityGroup(stack2, 'SG2', {
  allowAllOutbound: false, // if this is `true` then no egress rule will be created
  vpc,
});

// `connections.allowFrom` on `sg2` since we want the
// rules to be created in Stack2
sg2.connections.allowFrom(sg1, ec2.Port.tcp(3333));
```

In this case both the Ingress Rule for `sg2` and the Egress Rule for `sg1` will both be created
in `Stack 2` which avoids the cyclic reference.

## Machine Images (AMIs)

AMIs control the OS that gets launched when you start your EC2 instance. The EC2
library contains constructs to select the AMI you want to use.

Depending on the type of AMI, you select it a different way. Here are some
examples of images you might want to use:

```ts
// Pick the right Amazon Linux edition. All arguments shown are optional
// and will default to these values when omitted.
const amznLinux = ec2.MachineImage.latestAmazonLinux({
  generation: ec2.AmazonLinuxGeneration.AMAZON_LINUX,
  edition: ec2.AmazonLinuxEdition.STANDARD,
  virtualization: ec2.AmazonLinuxVirt.HVM,
  storage: ec2.AmazonLinuxStorage.GENERAL_PURPOSE,
  cpuType: ec2.AmazonLinuxCpuType.X86_64,
});

// Pick a Windows edition to use
const windows = ec2.MachineImage.latestWindows(ec2.WindowsVersion.WINDOWS_SERVER_2019_ENGLISH_FULL_BASE);

// Read AMI id from SSM parameter store
const ssm = ec2.MachineImage.fromSsmParameter('/my/ami', { os: ec2.OperatingSystemType.LINUX });

// Look up the most recent image matching a set of AMI filters.
// In this case, look up the NAT instance AMI, by using a wildcard
// in the 'name' field:
const natAmi = ec2.MachineImage.lookup({
  name: 'amzn-ami-vpc-nat-*',
  owners: ['amazon'],
});

// For other custom (Linux) images, instantiate a `GenericLinuxImage` with
// a map giving the AMI to in for each region:
const linux = ec2.MachineImage.genericLinux({
  'us-east-1': 'ami-97785bed',
  'eu-west-1': 'ami-12345678',
  // ...
});

// For other custom (Windows) images, instantiate a `GenericWindowsImage` with
// a map giving the AMI to in for each region:
const genericWindows = ec2.MachineImage.genericWindows({
  'us-east-1': 'ami-97785bed',
  'eu-west-1': 'ami-12345678',
  // ...
});
```

> NOTE: The AMIs selected by `MachineImage.lookup()` will be cached in
> `cdk.context.json`, so that your AutoScalingGroup instances aren't replaced while
> you are making unrelated changes to your CDK app.
>
> To query for the latest AMI again, remove the relevant cache entry from
> `cdk.context.json`, or use the `cdk context` command. For more information, see
> [Runtime Context](https://docs.aws.amazon.com/cdk/latest/guide/context.html) in the CDK
> developer guide.
>
> To customize the cache key, use the `additionalCacheKey` parameter.
> This allows you to have multiple lookups with the same parameters
> cache their values separately. This can be useful if you want to
> scope the context variable to a construct (ie, using `additionalCacheKey: this.node.path`),
> so that if the value in the cache needs to be updated, it does not need to be updated
> for all constructs at the same time.
>
> `MachineImage.genericLinux()`, `MachineImage.genericWindows()` will use `CfnMapping` in
> an agnostic stack.

## Special VPC configurations

### VPN connections to a VPC

Create your VPC with VPN connections by specifying the `vpnConnections` props (keys are construct `id`s):

```ts
import { SecretValue } from 'aws-cdk-lib/core';

const vpc = new ec2.Vpc(this, 'MyVpc', {
  vpnConnections: {
    dynamic: { // Dynamic routing (BGP)
      ip: '1.2.3.4',
      tunnelOptions: [
        {
          preSharedKeySecret: SecretValue.unsafePlainText('secretkey1234'),
        },
        {
          preSharedKeySecret: SecretValue.unsafePlainText('secretkey5678'),
        },
      ],
    },
    static: { // Static routing
      ip: '4.5.6.7',
      staticRoutes: [
        '192.168.10.0/24',
        '192.168.20.0/24'
      ]
    }
  }
});
```

To create a VPC that can accept VPN connections, set `vpnGateway` to `true`:

```ts
const vpc = new ec2.Vpc(this, 'MyVpc', {
  vpnGateway: true
});
```

VPN connections can then be added:

```ts
vpc.addVpnConnection('Dynamic', {
  ip: '1.2.3.4'
});
```

By default, routes will be propagated on the route tables associated with the private subnets. If no
private subnets exist, isolated subnets are used. If no isolated subnets exist, public subnets are
used. Use the [`Vpc`](/v2/docs/aws-cdk-lib.aws_ec2.Vpc) property `vpnRoutePropagation` to customize this behavior.

VPN connections expose [metrics (cloudwatch.Metric)](https://github.com/aws/aws-cdk/blob/main/packages/aws-cdk-lib/aws-cloudwatch/README.md) across all tunnels in the account/region and per connection:

```ts
// Across all tunnels in the account/region
const allDataOut = ec2.VpnConnection.metricAllTunnelDataOut();

// For a specific vpn connection
const vpnConnection = vpc.addVpnConnection('Dynamic', {
  ip: '1.2.3.4'
});
const state = vpnConnection.metricTunnelState();
```

### VPC endpoints

A VPC endpoint enables you to privately connect your VPC to supported AWS services and VPC endpoint services powered by PrivateLink without requiring an internet gateway, NAT device, VPN connection, or AWS Direct Connect connection. Instances in your VPC do not require public IP addresses to communicate with resources in the service. Traffic between your VPC and the other service does not leave the Amazon network.

Endpoints are virtual devices. They are horizontally scaled, redundant, and highly available VPC components that allow communication between instances in your VPC and services without imposing availability risks or bandwidth constraints on your network traffic.

```ts
    // Add gateway endpoints when creating the VPC
    const vpc = new ec2.Vpc(this, 'MyVpc', {
      gatewayEndpoints: {
        S3: {
          service: ec2.GatewayVpcEndpointAwsService.S3,
        },
      },
    });

    // Alternatively gateway endpoints can be added on the VPC
    const dynamoDbEndpoint = vpc.addGatewayEndpoint('DynamoDbEndpoint', {
      service: ec2.GatewayVpcEndpointAwsService.DYNAMODB,
    });

    // This allows to customize the endpoint policy
    dynamoDbEndpoint.addToPolicy(
      new iam.PolicyStatement({ // Restrict to listing and describing tables
        principals: [new iam.AnyPrincipal()],
        actions: ['dynamodb:DescribeTable', 'dynamodb:ListTables'],
        resources: ['*'],
      }));

    // Add an interface endpoint
    vpc.addInterfaceEndpoint('EcrDockerEndpoint', {
      service: ec2.InterfaceVpcEndpointAwsService.ECR_DOCKER,

      // Uncomment the following to allow more fine-grained control over
      // who can access the endpoint via the '.connections' object.
      // open: false
    });
```

By default, CDK will place a VPC endpoint in one subnet per AZ. If you wish to override the AZs CDK places the VPC endpoint in,
use the `subnets` parameter as follows:

```ts
declare const vpc: ec2.Vpc;

new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
  vpc,
  service: new ec2.InterfaceVpcEndpointService('com.amazonaws.vpce.us-east-1.vpce-svc-uuddlrlrbastrtsvc', 443),
  // Choose which availability zones to place the VPC endpoint in, based on
  // available AZs
  subnets: {
    availabilityZones: ['us-east-1a', 'us-east-1c']
  }
});
```

Per the [AWS documentation](https://aws.amazon.com/premiumsupport/knowledge-center/interface-endpoint-availability-zone/), not all
VPC endpoint services are available in all AZs. If you specify the parameter `lookupSupportedAzs`, CDK attempts to discover which
AZs an endpoint service is available in, and will ensure the VPC endpoint is not placed in a subnet that doesn't match those AZs.
These AZs will be stored in cdk.context.json.

```ts
declare const vpc: ec2.Vpc;

new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
  vpc,
  service: new ec2.InterfaceVpcEndpointService('com.amazonaws.vpce.us-east-1.vpce-svc-uuddlrlrbastrtsvc', 443),
  // Choose which availability zones to place the VPC endpoint in, based on
  // available AZs
  lookupSupportedAzs: true
});
```

Pre-defined AWS services are defined in the InterfaceVpcEndpointAwsService class, and can be used to
create VPC endpoints without having to configure name, ports, etc. For example, a Keyspaces endpoint can be created for
use in your VPC:

```ts
declare const vpc: ec2.Vpc;

new ec2.InterfaceVpcEndpoint(this, 'VPC Endpoint', {
  vpc,
  service: ec2.InterfaceVpcEndpointAwsService.KEYSPACES,
});
```

For cross-region VPC endpoints, specify the `serviceRegion` parameter:

```ts
declare const vpc: ec2.Vpc;

new ec2.InterfaceVpcEndpoint(this, 'CrossRegionEndpoint', {
  vpc,
  service: new ec2.InterfaceVpcEndpointService('com.amazonaws.vpce.us-east-1.vpce-svc-123456', 443),
  serviceRegion: 'us-east-1', // Same region as the service endpoint above
});
```

#### Security groups for interface VPC endpoints

By default, interface VPC endpoints create a new security group and all traffic to the endpoint from within the VPC will be automatically allowed.

Use the `connections` object to allow other traffic to flow to the endpoint:

```ts
declare const myEndpoint: ec2.InterfaceVpcEndpoint;

myEndpoint.connections.allowDefaultPortFromAnyIpv4();
```

Alternatively, existing security groups can be used by specifying the `securityGroups` prop.

#### IPv6 and Dualstack support

As IPv4 addresses are running out, many AWS services are adding support for IPv6 or Dualstack (IPv4 and IPv6 support) for their VPC Endpoints.

IPv6 and Dualstack address types can be configured for both interface and gateway endpoints using `ipAddressType` and `dnsRecordIpType`:

```ts
// Interface endpoint with IPv6
vpc.addInterfaceEndpoint('ExampleEndpoint', {
  service: ec2.InterfaceVpcEndpointAwsService.ECR,
  ipAddressType: ec2.VpcEndpointIpAddressType.IPV6,
  dnsRecordIpType: ec2.VpcEndpointDnsRecordIpType.IPV6,
});

// Gateway endpoint with dualstack
vpc.addGatewayEndpoint('S3DualstackEndpoint', {
  service: ec2.GatewayVpcEndpointAwsService.S3,
  ipAddressType: ec2.VpcEndpointIpAddressType.DUALSTACK,
  dnsRecordIpType: ec2.VpcEndpointDnsRecordIpType.DUALSTACK,
});
```

The possible values for `ipAddressType` are:
* `IPV4` This option is supported only if all selected subnets have IPv4 address ranges and the endpoint service accepts IPv4 requests.
* `IPV6` This option is supported only if all selected subnets are IPv6 only subnets and the endpoint service accepts IPv6 requests.
* `DUALSTACK` Assign both IPv4 and IPv6 addresses to the endpoint network interfaces. This option is supported only if all selected subnets have both IPv4 and IPv6 address ranges and the endpoint service accepts both IPv4 and IPv6 requests.
  The possible values for `dnsRecordIpType` are:
* `IPV4` Create A records for the private, Regional, and zonal DNS names. `ipAddressType` MUST be `IPV4` or `DUALSTACK`
* `IPV6` Create AAAA records for the private, Regional, and zonal DNS names. `ipAddressType` MUST be `IPV6` or `DUALSTACK`
* `DUALSTACK` Create A and AAAA records for the private, Regional, and zonal DNS names. `ipAddressType` MUST be `DUALSTACK`
* `SERVICE_DEFINED` Create A records for the private, Regional, and zonal DNS names and AAAA records for the Regional and zonal DNS names. `ipAddressType` MUST be `DUALSTACK`
  We can only configure dnsRecordIpType when ipAddressType is specified and private DNS must be enabled to use any DNS related features. To avoid complications, it is recommended to always set `privateDnsEnabled` to true (defaults to true) and set the `ipAddressType` and `dnsRecordIpType` explicitly when needing specific IP type behavior. Furthermore, check that the VPC being used supports the IP address type that is being configued.
  More documentation on compatibility and specifications can be found [here](https://docs.aws.amazon.com/vpc/latest/privatelink/create-endpoint-service.html#connect-to-endpoint-service)

### VPC endpoint services

A VPC endpoint service enables you to expose a Network Load Balancer(s) as a provider service to consumers, who connect to your service over a VPC endpoint. You can restrict access to your service via allowed principals (anything that extends ArnPrincipal), and require that new connections be manually accepted. You can also enable Contributor Insight rules.

```ts
declare const networkLoadBalancer1: elbv2.NetworkLoadBalancer;
declare const networkLoadBalancer2: elbv2.NetworkLoadBalancer;

new ec2.VpcEndpointService(this, 'EndpointService', {
  vpcEndpointServiceLoadBalancers: [networkLoadBalancer1, networkLoadBalancer2],
  acceptanceRequired: true,
  allowedPrincipals: [new iam.ArnPrincipal('arn:aws:iam::123456789012:root')],
  contributorInsights: true
});
```

You can also include a service principal in the `allowedPrincipals` property by specifying it as a parameter to the  `ArnPrincipal` constructor.
The resulting VPC endpoint will have an allowlisted principal of type `Service`, instead of `Arn` for that item in the list.

```ts
declare const networkLoadBalancer: elbv2.NetworkLoadBalancer;

new ec2.VpcEndpointService(this, 'EndpointService', {
  vpcEndpointServiceLoadBalancers: [networkLoadBalancer],
  allowedPrincipals: [new iam.ArnPrincipal('ec2.amazonaws.com')],
});
```

You can specify which IP address types (IPv4, IPv6, or both) are supported for your VPC endpoint service:

```ts
declare const networkLoadBalancer: elbv2.NetworkLoadBalancer;

new ec2.VpcEndpointService(this, 'EndpointService', {
  vpcEndpointServiceLoadBalancers: [networkLoadBalancer],
  // Support both IPv4 and IPv6 connections to the endpoint service
  supportedIpAddressTypes: [
    ec2.IpAddressType.IPV4,
    ec2.IpAddressType.IPV6,
  ],
});
```

You can restrict access to your endpoint service to specific AWS regions:

```ts
declare const networkLoadBalancer: elbv2.NetworkLoadBalancer;

new ec2.VpcEndpointService(this, 'EndpointService', {
  vpcEndpointServiceLoadBalancers: [networkLoadBalancer],
  // Allow service consumers from these regions only
  allowedRegions: ['us-east-1', 'eu-west-1'],
});
```

Endpoint services support private DNS, which makes it easier for clients to connect to your service by automatically setting up DNS in their VPC.
You can enable private DNS on an endpoint service like so:

```ts
import { PublicHostedZone, VpcEndpointServiceDomainName } from 'aws-cdk-lib/aws-route53';
declare const zone: PublicHostedZone;
declare const vpces: ec2.VpcEndpointService;

new VpcEndpointServiceDomainName(this, 'EndpointDomain', {
  endpointService: vpces,
  domainName: 'my-stuff.aws-cdk.dev',
  publicHostedZone: zone,
});
```

Note: The domain name must be owned (registered through Route53) by the account the endpoint service is in, or delegated to the account.
The VpcEndpointServiceDomainName will handle the AWS side of domain verification, the process for which can be found
[here](https://docs.aws.amazon.com/vpc/latest/userguide/endpoint-services-dns-validation.html)

### Client VPN endpoint

AWS Client VPN is a managed client-based VPN service that enables you to securely access your AWS
resources and resources in your on-premises network. With Client VPN, you can access your resources
from any location using an OpenVPN-based VPN client.

Use the `addClientVpnEndpoint()` method to add a client VPN endpoint to a VPC:

```ts
vpc.addClientVpnEndpoint('Endpoint', {
  cidr: '10.100.0.0/16',
  serverCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/server-certificate-id',
  // Mutual authentication
  clientCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/client-certificate-id',
  // User-based authentication
  userBasedAuthentication: ec2.ClientVpnUserBasedAuthentication.federated(samlProvider),
});
```

The endpoint must use at least one [authentication method](https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/client-authentication.html):

* Mutual authentication with a client certificate
* User-based authentication (directory or federated)

If user-based authentication is used, the [self-service portal URL](https://docs.aws.amazon.com/vpn/latest/clientvpn-user/self-service-portal.html)
is made available via a CloudFormation output.

By default, a new security group is created, and logging is enabled. Moreover, a rule to
authorize all users to the VPC CIDR is created.

To customize authorization rules, set the `authorizeAllUsersToVpcCidr` prop to `false`
and use `addAuthorizationRule()`:

```ts
const endpoint = vpc.addClientVpnEndpoint('Endpoint', {
  cidr: '10.100.0.0/16',
  serverCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/server-certificate-id',
  userBasedAuthentication: ec2.ClientVpnUserBasedAuthentication.federated(samlProvider),
  authorizeAllUsersToVpcCidr: false,
});

endpoint.addAuthorizationRule('Rule', {
  cidr: '10.0.10.0/32',
  groupId: 'group-id',
});
```

Use `addRoute()` to configure network routes:

```ts
const endpoint = vpc.addClientVpnEndpoint('Endpoint', {
  cidr: '10.100.0.0/16',
  serverCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/server-certificate-id',
  userBasedAuthentication: ec2.ClientVpnUserBasedAuthentication.federated(samlProvider),
});

// Client-to-client access
endpoint.addRoute('Route', {
  cidr: '10.100.0.0/16',
  target: ec2.ClientVpnRouteTarget.local(),
});
```

Use the `connections` object of the endpoint to allow traffic to other security groups.

To enable [client route enforcement](https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/cvpn-working-cre.html), configure the `clientRouteEnforcementOptions.enforced` prop to `true`:

```ts
const endpoint = vpc.addClientVpnEndpoint('Endpoint', {
  cidr: '10.100.0.0/16',
  serverCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/server-certificate-id',
  clientCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/client-certificate-id',
  clientRouteEnforcementOptions: {
    enforced: true,
  },
});
```

To control whether clients are automatically disconnected when the maximum session duration is reached, use the `disconnectOnSessionTimeout` prop.
By default (`true`), clients are disconnected and must manually reconnect.
Set to `false` to allow automatic reconnection attempts:

```ts
const endpoint = vpc.addClientVpnEndpoint('Endpoint', {
  cidr: '10.100.0.0/16',
  serverCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/server-certificate-id',
  clientCertificateArn: 'arn:aws:acm:us-east-1:123456789012:certificate/client-certificate-id',
  disconnectOnSessionTimeout: false, // Allow automatic reconnection attempts
});
```

Detail information about maximum VPN session duration timeout can be found in the [AWS documentation](https://docs.aws.amazon.com/vpn/latest/clientvpn-admin/cvpn-working-max-duration.html).

## Instances

You can use the [`Instance`](/v2/docs/aws-cdk-lib.aws_ec2.Instance) class to start up a single EC2 instance. For production setups, we recommend
you use an `AutoScalingGroup` from the `aws-autoscaling` module instead, as AutoScalingGroups will take
care of restarting your instance if it ever fails.

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;

// Amazon Linux 2
new ec2.Instance(this, 'Instance2', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2(),
});

// Amazon Linux 2 with kernel 5.x
new ec2.Instance(this, 'Instance3', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2({
    kernel: ec2.AmazonLinux2Kernel.KERNEL_5_10,
  }),
});

// Amazon Linux 2023
new ec2.Instance(this, 'Instance4', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
});

// Graviton 3 Processor
new ec2.Instance(this, 'Instance5', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2023({
    cpuType: ec2.AmazonLinuxCpuType.ARM_64,
  }),
});
```

### Latest Amazon Linux Images

Rather than specifying a specific AMI ID to use, it is possible to specify a SSM
Parameter that contains the AMI ID. AWS publishes a set of [public parameters](https://docs.aws.amazon.com/systems-manager/latest/userguide/parameter-store-public-parameters-ami.html)
that contain the latest Amazon Linux AMIs. To make it easier to query a
particular image parameter, the CDK provides a couple of constructs [`AmazonLinux2ImageSsmParameter`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2ImageSsmParameter),
[`AmazonLinux2022ImageSsmParameter`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2022ImageSsmParameter), & `AmazonLinux2023SsmParameter`. For example
to use the latest `al2023` image:

```ts
declare const vpc: ec2.Vpc;

new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
});
```

> **Warning**
> Since this retrieves the value from an SSM parameter at deployment time, the
> value will be resolved each time the stack is deployed. This means that if
> the parameter contains a different value on your next deployment, the instance
> will be replaced.

It is also possible to perform the lookup once at synthesis time and then cache
the value in CDK context. This way the value will not change on future
deployments unless you manually refresh the context.

```ts
declare const vpc: ec2.Vpc;

new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2023({
    cachedInContext: true, // default is false
  }),
});

// or
new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  // context cache is turned on by default
  machineImage: new ec2.AmazonLinux2023ImageSsmParameter(),
});

// or
new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2023({
    cachedInContext: true,
    // creates a distinct context variable for this image, instead of resolving to the same
    // value anywhere this lookup is done in your app
    additionalCacheKey: this.node.path,
  }),
});

// or
new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  // context cache is turned on by default
  machineImage: new ec2.AmazonLinux2023ImageSsmParameter({
    // creates a distinct context variable for this image, instead of resolving to the same
    // value anywhere this lookup is done in your app
    additionalCacheKey: this.node.path,
  }),
});
```

#### Kernel Versions

Each Amazon Linux AMI uses a specific kernel version. Most Amazon Linux
generations come with an AMI using the "default" kernel and then 1 or more
AMIs using a specific kernel version, which may or may not be different from the
default kernel version.

For example, Amazon Linux 2 has two different AMIs available from the SSM
parameters.

- `/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-ebs`
  - This is the "default" kernel which uses `kernel-4.14`
- `/aws/service/ami-amazon-linux-latest/amzn2-ami-kernel-5.10-hvm-x86_64-ebs`

If a new Amazon Linux generation AMI is published with a new kernel version,
then a new SSM parameter will be created with the new version
(e.g. `/aws/service/ami-amazon-linux-latest/amzn2-ami-kernel-5.15-hvm-x86_64-ebs`),
but the "default" AMI may or may not be updated.

If you would like to make sure you always have the latest kernel version, then
either specify the specific latest kernel version or opt-in to using the CDK
latest kernel version.

```ts
declare const vpc: ec2.Vpc;

new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  // context cache is turned on by default
  machineImage: new ec2.AmazonLinux2023ImageSsmParameter({
    kernel: ec2.AmazonLinux2023Kernel.KERNEL_6_1,
  }),
});
```

_CDK managed latest_

```ts
declare const vpc: ec2.Vpc;

new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  // context cache is turned on by default
  machineImage: new ec2.AmazonLinux2023ImageSsmParameter({
    kernel: ec2.AmazonLinux2023Kernel.CDK_LATEST,
  }),
});

// or

new ec2.Instance(this, 'LatestAl2023', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.C7G, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2023(), // always uses latest kernel version
});
```

When using the CDK managed latest version, when a new kernel version is made
available the `LATEST` will be updated to point to the new kernel version. You
then would be required to update the newest CDK version for it to take effect.

### Configuring Instances using CloudFormation Init (cfn-init)

CloudFormation Init allows you to configure your instances by writing files to them, installing software
packages, starting services and running arbitrary commands. By default, if any of the instance setup
commands throw an error; the deployment will fail and roll back to the previously known good state.
The following documentation also applies to `AutoScalingGroup`s.

For the full set of capabilities of this system, see the documentation for
[`AWS::CloudFormation::Init`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-init.html).
Here is an example of applying some configuration to an instance:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,

  // Showing the most complex setup, if you have simpler requirements
  // you can use `CloudFormationInit.fromElements()`.
  init: ec2.CloudFormationInit.fromConfigSets({
    configSets: {
      // Applies the configs below in this order
      default: ['yumPreinstall', 'config'],
    },
    configs: {
      yumPreinstall: new ec2.InitConfig([
        // Install an Amazon Linux package using yum
        ec2.InitPackage.yum('git'),
      ]),
      config: new ec2.InitConfig([
        // Create a JSON file from tokens (can also create other files)
        ec2.InitFile.fromObject('/etc/stack.json', {
          stackId: Stack.of(this).stackId,
          stackName: Stack.of(this).stackName,
          region: Stack.of(this).region,
        }),

        // Create a group and user
        ec2.InitGroup.fromName('my-group'),
        ec2.InitUser.fromName('my-user'),

        // Install an RPM from the internet
        ec2.InitPackage.rpm('http://mirrors.ukfast.co.uk/sites/dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/r/rubygem-git-1.5.0-2.el8.noarch.rpm'),
      ]),
    },
  }),
  initOptions: {
    // Optional, which configsets to activate (['default'] by default)
    configSets: ['default'],

    // Optional, how long the installation is expected to take (5 minutes by default)
    timeout: Duration.minutes(30),

    // Optional, whether to include the --url argument when running cfn-init and cfn-signal commands (false by default)
    includeUrl: true,

    // Optional, whether to include the --role argument when running cfn-init and cfn-signal commands (false by default)
    includeRole: true,
  },
});
```

[`InitCommand`](/v2/docs/aws-cdk-lib.aws_ec2.InitCommand) can not be used to start long-running processes. At deploy time,
`cfn-init` will always wait for the process to exit before continuing, causing
the CloudFormation deployment to fail because the signal hasn't been received
within the expected timeout.

Instead, you should install a service configuration file onto your machine [`InitFile`](/v2/docs/aws-cdk-lib.aws_ec2.InitFile),
and then use [`InitService`](/v2/docs/aws-cdk-lib.aws_ec2.InitService) to start it.

If your Linux OS is using SystemD (like Amazon Linux 2 or higher), the CDK has
helpers to create a long-running service using CFN Init. You can create a
SystemD-compatible config file using `InitService.systemdConfigFile()`, and
start it immediately. The following examples shows how to start a trivial Python
3 web server:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),

  init: ec2.CloudFormationInit.fromElements(
    // Create a simple config file that runs a Python web server
    ec2.InitService.systemdConfigFile('simpleserver', {
      command: '/usr/bin/python3 -m http.server 8080',
      cwd: '/var/www/html',
    }),
    // Start the server using SystemD
    ec2.InitService.enable('simpleserver', {
      serviceManager: ec2.ServiceManager.SYSTEMD,
    }),
    // Drop an example file to show the web server working
    ec2.InitFile.fromString('/var/www/html/index.html', 'Hello! It\'s working!'),
  ),
});
```

You can have services restarted after the init process has made changes to the system.
To do that, instantiate an [`InitServiceRestartHandle`](/v2/docs/aws-cdk-lib.aws_ec2.InitServiceRestartHandle) and pass it to the config elements
that need to trigger the restart and the service itself. For example, the following
config writes a config file for nginx, extracts an archive to the root directory, and then
restarts nginx so that it picks up the new config and files:

```ts
declare const myBucket: s3.Bucket;

const handle = new ec2.InitServiceRestartHandle();

ec2.CloudFormationInit.fromElements(
  ec2.InitFile.fromString('/etc/nginx/nginx.conf', '...', { serviceRestartHandles: [handle] }),
  ec2.InitSource.fromS3Object('/var/www/html', myBucket, 'html.zip', { serviceRestartHandles: [handle] }),
  ec2.InitService.enable('nginx', {
    serviceRestartHandle: handle,
  })
);
```

You can use the `environmentVariables` or `environmentFiles` parameters to specify environment variables
for your services:

```ts
new ec2.InitConfig([
  ec2.InitFile.fromString('/myvars.env', 'VAR_FROM_FILE="VAR_FROM_FILE"'),
  ec2.InitService.systemdConfigFile('myapp', {
    command: '/usr/bin/python3 -m http.server 8080',
    cwd: '/var/www/html',
    environmentVariables: {
      MY_VAR: 'MY_VAR',
    },
    environmentFiles: ['/myvars.env'],
  }),
])
```

### Bastion Hosts

A bastion host functions as an instance used to access servers and resources in a VPC without open up the complete VPC on a network level.
You can use bastion hosts using a standard SSH connection targeting port 22 on the host. As an alternative, you can connect the SSH connection
feature of AWS Systems Manager Session Manager, which does not need an opened security group. (https://aws.amazon.com/about-aws/whats-new/2019/07/session-manager-launches-tunneling-support-for-ssh-and-scp/)

A default bastion host for use via SSM can be configured like:

```ts
const host = new ec2.BastionHostLinux(this, 'BastionHost', { vpc });
```

If you want to connect from the internet using SSH, you need to place the host into a public subnet. You can then configure allowed source hosts.

```ts
const host = new ec2.BastionHostLinux(this, 'BastionHost', {
  vpc,
  subnetSelection: { subnetType: ec2.SubnetType.PUBLIC },
});
host.allowSshAccessFrom(ec2.Peer.ipv4('1.2.3.4/32'));
```

As there are no SSH public keys deployed on this machine, you need to use [EC2 Instance Connect](https://aws.amazon.com/de/blogs/compute/new-using-amazon-ec2-instance-connect-for-ssh-access-to-your-ec2-instances/)
with the command `aws ec2-instance-connect send-ssh-public-key` to provide your SSH public key.

EBS volume for the bastion host can be encrypted like:

```ts
const host = new ec2.BastionHostLinux(this, 'BastionHost', {
  vpc,
  blockDevices: [{
    deviceName: '/dev/sdh',
    volume: ec2.BlockDeviceVolume.ebs(10, {
      encrypted: true,
    }),
  }],
});
```

It's recommended to set the `@aws-cdk/aws-ec2:bastionHostUseAmazonLinux2023ByDefault`
[feature flag](https://docs.aws.amazon.com/cdk/v2/guide/featureflags.html) to `true` to use Amazon Linux 2023 as the
bastion host AMI. Without this flag set, the bastion host will default to Amazon Linux 2, which will be unsupported in
June 2025.

```json
{
  "context": {
    "@aws-cdk/aws-ec2:bastionHostUseAmazonLinux2023ByDefault": true
  }
}
```

### Placement Group

Specify `placementGroup` to enable the placement group support:

```ts
declare const instanceType: ec2.InstanceType;

const pg = new ec2.PlacementGroup(this, 'test-pg', {
  strategy: ec2.PlacementGroupStrategy.SPREAD,
});

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  placementGroup: pg,
});
```

### Block Devices

To add EBS block device mappings, specify the `blockDevices` property. The following example sets the EBS-backed
root device (`/dev/sda1`) size to 50 GiB, and adds another EBS-backed device mapped to `/dev/sdm` that is 100 GiB in
size:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,

  // ...

  blockDevices: [
    {
      deviceName: '/dev/sda1',
      volume: ec2.BlockDeviceVolume.ebs(50),
    },
    {
      deviceName: '/dev/sdm',
      volume: ec2.BlockDeviceVolume.ebs(100),
    },
  ],
});
```

It is also possible to encrypt the block devices. In this example we will create an customer managed key encrypted EBS-backed root device:

```ts
import { Key } from 'aws-cdk-lib/aws-kms';

declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

const kmsKey = new Key(this, 'KmsKey')

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,

  // ...

  blockDevices: [
    {
      deviceName: '/dev/sda1',
      volume: ec2.BlockDeviceVolume.ebs(50, {
        encrypted: true,
        kmsKey: kmsKey,
      }),
    },
  ],
});
```

To specify the throughput value for `gp3` volumes, use the `throughput` property:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,

  // ...

  blockDevices: [
    {
      deviceName: '/dev/sda1',
      volume: ec2.BlockDeviceVolume.ebs(100, {
        volumeType: ec2.EbsDeviceVolumeType.GP3,
        throughput: 250,
      }),
    },
  ],
});
```

#### EBS Optimized Instances

An Amazon EBS–optimized instance uses an optimized configuration stack and provides additional, dedicated capacity for Amazon EBS I/O. This optimization provides the best performance for your EBS volumes by minimizing contention between Amazon EBS I/O and other traffic from your instance.

Depending on the instance type, this features is enabled by default while others require explicit activation. Please refer to the [documentation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html) for details.

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,
  ebsOptimized: true,
  blockDevices: [{
    deviceName: '/dev/xvda',
    volume: ec2.BlockDeviceVolume.ebs(8),
  }],
});
```

### Volumes

Whereas a [`BlockDeviceVolume`](/v2/docs/aws-cdk-lib.aws_ec2.BlockDeviceVolume) is an EBS volume that is created and destroyed as part of the creation and destruction of a specific instance. A [`Volume`](/v2/docs/aws-cdk-lib.aws_ec2.Volume) is for when you want an EBS volume separate from any particular instance. A [`Volume`](/v2/docs/aws-cdk-lib.aws_ec2.Volume) is an EBS block device that can be attached to, or detached from, any instance at any time. Some types of `Volume`s can also be attached to multiple instances at the same time to allow you to have shared storage between those instances.

A notable restriction is that a Volume can only be attached to instances in the same availability zone as the Volume itself.

The following demonstrates how to create a 500 GiB encrypted Volume in the `us-west-2a` availability zone, and give a role the ability to attach that Volume to a specific instance:

```ts
declare const instance: ec2.Instance;
declare const role: iam.Role;

const volume = new ec2.Volume(this, 'Volume', {
  availabilityZone: 'us-west-2a',
  size: Size.gibibytes(500),
  encrypted: true,
});

volume.grantAttachVolume(role, [instance]);
```

#### Instances Attaching Volumes to Themselves

If you need to grant an instance the ability to attach/detach an EBS volume to/from itself, then using `grantAttachVolume` and `grantDetachVolume` as outlined above
will lead to an unresolvable circular reference between the instance role and the instance. In this case, use `grantAttachVolumeByResourceTag` and `grantDetachVolumeByResourceTag` as follows:

```ts
declare const instance: ec2.Instance;
declare const volume: ec2.Volume;

const attachGrant = volume.grantAttachVolumeByResourceTag(instance.grantPrincipal, [instance]);
const detachGrant = volume.grantDetachVolumeByResourceTag(instance.grantPrincipal, [instance]);
```

#### Attaching Volumes

The Amazon EC2 documentation for
[Linux Instances](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.html) and
[Windows Instances](https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ebs-volumes.html) contains information on how
to attach and detach your Volumes to/from instances, and how to format them for use.

The following is a sample skeleton of EC2 UserData that can be used to attach a Volume to the Linux instance that it is running on:

```ts
declare const instance: ec2.Instance;
declare const volume: ec2.Volume;

volume.grantAttachVolumeByResourceTag(instance.grantPrincipal, [instance]);
const targetDevice = '/dev/xvdz';
instance.userData.addCommands(
  // Retrieve token for accessing EC2 instance metadata (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-data-retrieval.html)
  `TOKEN=$(curl -SsfX PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600")`,
  // Retrieve the instance Id of the current EC2 instance
  `INSTANCE_ID=$(curl -SsfH "X-aws-ec2-metadata-token: $TOKEN" http://169.254.169.254/latest/meta-data/instance-id)`,
  // Attach the volume to /dev/xvdz
  `aws --region ${Stack.of(this).region} ec2 attach-volume --volume-id ${volume.volumeId} --instance-id $INSTANCE_ID --device ${targetDevice}`,
  // Wait until the volume has attached
  `while ! test -e ${targetDevice}; do sleep 1; done`
  // The volume will now be mounted. You may have to add additional code to format the volume if it has not been prepared.
);
```

#### Tagging Volumes

You can configure [tag propagation on volume creation](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html#cfn-ec2-instance-propagatetagstovolumeoncreation).

```ts
  declare const vpc: ec2.Vpc;
  declare const instanceType: ec2.InstanceType;
  declare const machineImage: ec2.IMachineImage;

  new ec2.Instance(this, 'Instance', {
    vpc,
    machineImage,
    instanceType,
    propagateTagsToVolumeOnCreation: true,
  });
```

#### Throughput on GP3 Volumes

You can specify the `throughput` of a GP3 volume from 125 (default) to 2000.

```ts
new ec2.Volume(this, 'Volume', {
  availabilityZone: 'us-east-1a',
  size: Size.gibibytes(125),
  volumeType: ec2.EbsDeviceVolumeType.GP3,
  throughput: 125,
});
```

#### Volume initialization rate

When creating an EBS volume from a snapshot, you can specify the [volume initialization rate](https://docs.aws.amazon.com/ebs/latest/userguide/initalize-volume.html#volume-initialization-rate) at which the snapshot blocks are downloaded from Amazon S3 to the volume.
Specifying a volume initialization rate ensures that the volume is initialized at a predictable and consistent rate after creation.

```ts
new ec2.Volume(this, 'Volume', {
  availabilityZone: 'us-east-1a',
  size: Size.gibibytes(500),
  snapshotId: 'snap-1234567890abcdef0',
  volumeInitializationRate: Size.mebibytes(250),
});
```

The `volumeInitializationRate` must be:

* Between 100 and 300 MiB/s
* Only specified when creating a volume from a snapshot

### Configuring Instance Metadata Service (IMDS)

#### Comprehensive Metadata Options

You can configure [EC2 Instance Metadata Service](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html) options using individual properties. This provides comprehensive control over all metadata service settings:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

// Example 1: Enforce IMDSv2 with comprehensive options
new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,
  httpEndpoint: true,
  httpProtocolIpv6: false,
  httpPutResponseHopLimit: 2,
  httpTokens: ec2.HttpTokens.REQUIRED,
  instanceMetadataTags: true,
});

// Example 2: Enforce IMDSv2 with minimal configuration
new ec2.Instance(this, 'SecureInstance', {
  vpc,
  instanceType,
  machineImage,
  httpTokens: ec2.HttpTokens.REQUIRED,
});
```

#### Simple IMDSv2 Enforcement

For simple IMDSv2 enforcement without additional configuration, you can use the `requireImdsv2` property:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage,

  // Simple IMDSv2 enforcement
  requireImdsv2: true,
});
```

#### Applying to Multiple Instances

You can also use the either the [`InstanceRequireImdsv2Aspect`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceRequireImdsv2Aspect) for EC2 instances or the [`LaunchTemplateRequireImdsv2Aspect`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateRequireImdsv2Aspect) for EC2 launch templates
to apply the operation to multiple instances or launch templates, respectively.

The following example demonstrates how to use the [`InstanceRequireImdsv2Aspect`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceRequireImdsv2Aspect) to require IMDSv2 for all EC2 instances in a stack:

```ts
const aspect = new ec2.InstanceRequireImdsv2Aspect();
Aspects.of(this).add(aspect);
```

### Associating a Public IP Address with an Instance

All subnets have an attribute that determines whether instances launched into that subnet are assigned a public IPv4 address. This attribute is set to true by default for default public subnets. Thus, an EC2 instance launched into a default public subnet will be assigned a public IPv4 address. Nondefault public subnets have this attribute set to false by default and any EC2 instance launched into a nondefault public subnet will not be assigned a public IPv4 address automatically. To automatically assign a public IPv4 address to an instance launched into a nondefault public subnet, you can set the `associatePublicIpAddress` property on the [`Instance`](/v2/docs/aws-cdk-lib.aws_ec2.Instance) construct to true. Alternatively, to not automatically assign a public IPv4 address to an instance launched into a default public subnet, you can set `associatePublicIpAddress` to false. Including this property, removing this property, or updating the value of this property on an existing instance will result in replacement of the instance.

```ts
const vpc = new ec2.Vpc(this, 'VPC', {
  cidr: '10.0.0.0/16',
  natGateways: 0,
  maxAzs: 3,
  subnetConfiguration: [
    {
      name: 'public-subnet-1',
      subnetType: ec2.SubnetType.PUBLIC,
      cidrMask: 24,
    },
  ],
});

const instance = new ec2.Instance(this, 'Instance', {
  vpc,
  vpcSubnets: { subnetGroupName: 'public-subnet-1' },
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.NANO),
  machineImage: new ec2.AmazonLinuxImage({ generation: ec2.AmazonLinuxGeneration.AMAZON_LINUX_2 }),
  detailedMonitoring: true,
  associatePublicIpAddress: true,
});
```

### Specifying a key pair

To allow SSH access to an EC2 instance by default, a Key Pair must be specified. Key pairs can
be provided with the `keyPair` property to instances and launch templates. You can create a
key pair for an instance like this:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;

const keyPair = new ec2.KeyPair(this, 'KeyPair', {
  type: ec2.KeyPairType.ED25519,
  format: ec2.KeyPairFormat.PEM,
});
const instance = new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  // Use the custom key pair
  keyPair,
});
```

When a new EC2 Key Pair is created (without imported material), the private key material is
automatically stored in Systems Manager Parameter Store. This can be retrieved from the key pair
construct:

```ts
const keyPair = new ec2.KeyPair(this, 'KeyPair');
const privateKey = keyPair.privateKey;
```

If you already have an SSH key that you wish to use in EC2, that can be provided when constructing the
[`KeyPair`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPair). If public key material is provided, the key pair is considered "imported" and there
will not be any data automatically stored in Systems Manager Parameter Store and the `type` property
cannot be specified for the key pair.

```ts
const keyPair = new ec2.KeyPair(this, 'KeyPair', {
  publicKeyMaterial: "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIB7jpNzG+YG0s+xIGWbxrxIZiiozHOEuzIJacvASP0mq",
})
```

#### Using an existing EC2 Key Pair

If you already have an EC2 Key Pair created outside of the CDK, you can import that key to
your CDK stack.

You can import it purely by name:

```ts
const keyPair = ec2.KeyPair.fromKeyPairName(this, 'KeyPair', 'the-keypair-name');
```

Or by specifying additional attributes:

```ts
const keyPair = ec2.KeyPair.fromKeyPairAttributes(this, 'KeyPair', {
  keyPairName: 'the-keypair-name',
  type: ec2.KeyPairType.RSA,
})
```

### Using IPv6 IPs

Instances can be given IPv6 IPs by launching them into a subnet of a dual stack VPC.

```ts
const vpc = new ec2.Vpc(this, 'Ip6VpcDualStack', {
  ipProtocol: ec2.IpProtocol.DUAL_STACK,
  subnetConfiguration: [
    {
      name: 'Public',
      subnetType: ec2.SubnetType.PUBLIC,
      mapPublicIpOnLaunch: true,
    },
    {
      name: 'Private',
      subnetType: ec2.SubnetType.PRIVATE_ISOLATED,
    },
  ],
});

const instance = new ec2.Instance(this, 'MyInstance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T2, ec2.InstanceSize.MICRO),
  machineImage: ec2.MachineImage.latestAmazonLinux2(),
  vpc: vpc,
  vpcSubnets: { subnetType: ec2.SubnetType.PUBLIC },
  allowAllIpv6Outbound: true,

  // ...
});

instance.connections.allowFrom(ec2.Peer.anyIpv6(), ec2.Port.allIcmpV6(), 'allow ICMPv6');
```

Note to set `mapPublicIpOnLaunch` to true in the `subnetConfiguration`.

Additionally, IPv6 support varies by instance type. Most instance types have IPv6 support with exception of m1-m3, c1, g2, and t1.micro. A full list can be found here: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#AvailableIpPerENI.

#### Specifying the IPv6 Address

If you want to specify [the number of IPv6 addresses](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/MultipleIP.html#assign-multiple-ipv6) to assign to the instance, you can use the `ipv6AddresseCount` property:

```ts
// dual stack VPC
declare const vpc: ec2.Vpc;

const instance = new ec2.Instance(this, 'MyInstance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.M5, ec2.InstanceSize.LARGE),
  machineImage: ec2.MachineImage.latestAmazonLinux2(),
  vpc: vpc,
  vpcSubnets: { subnetType: ec2.SubnetType.PUBLIC },
  // Assign 2 IPv6 addresses to the instance
  ipv6AddressCount: 2,
});
```

### Credit configuration modes for burstable instances

You can set the [credit configuration mode](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-credits-baseline-concepts.html) for burstable instances (T2, T3, T3a and T4g instance types):

```ts
declare const vpc: ec2.Vpc;

const instance = new ec2.Instance(this, 'Instance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.MICRO),
  machineImage: ec2.MachineImage.latestAmazonLinux2(),
  vpc: vpc,
  creditSpecification: ec2.CpuCredits.STANDARD,
});
```

It is also possible to set the credit configuration mode for NAT instances.

```ts
const natInstanceProvider = ec2.NatProvider.instance({
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T4G, ec2.InstanceSize.LARGE),
  machineImage: new ec2.AmazonLinuxImage(),
  creditSpecification: ec2.CpuCredits.UNLIMITED,
});
new ec2.Vpc(this, 'VPC', {
  natGatewayProvider: natInstanceProvider,
});
```

**Note**: `CpuCredits.UNLIMITED` mode is not supported for T3 instances that are launched on a Dedicated Host.

### Shutdown behavior

You can specify the behavior of the instance when you initiate shutdown from the instance (using the operating system command for system shutdown).

```ts
declare const vpc: ec2.Vpc;

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.T3, ec2.InstanceSize.NANO),
  machineImage: new ec2.AmazonLinuxImage({ generation: ec2.AmazonLinuxGeneration.AMAZON_LINUX_2 }),
  instanceInitiatedShutdownBehavior: ec2.InstanceInitiatedShutdownBehavior.TERMINATE, // default is STOP
});
```

### Enabling Nitro Enclaves

You can enable [AWS Nitro Enclaves](https://docs.aws.amazon.com/enclaves/latest/user/nitro-enclave.html) for
your EC2 instances by setting the `enclaveEnabled` property to `true`. Nitro Enclaves is a feature of
AWS Nitro System that enables creating isolated and highly constrained CPU environments known as enclaves.

```ts
declare const vpc: ec2.Vpc;

const instance = new ec2.Instance(this, 'Instance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.M5, ec2.InstanceSize.XLARGE),
  machineImage: new ec2.AmazonLinuxImage(),
  vpc: vpc,
  enclaveEnabled: true,
});
```

> NOTE: You must use an instance type and operating system that support Nitro Enclaves.
> For more information, see [Requirements](https://docs.aws.amazon.com/enclaves/latest/user/nitro-enclave.html#nitro-enclave-reqs).

### Enabling Termination Protection

You can enable [Termination Protection](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_ChangingDisableAPITermination.html) for
your EC2 instances by setting the `disableApiTermination` property to `true`. Termination Protection controls whether the instance can be terminated using the AWS Management Console, AWS Command Line Interface (AWS CLI), or API.

```ts
declare const vpc: ec2.Vpc;

const instance = new ec2.Instance(this, 'Instance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.M5, ec2.InstanceSize.XLARGE),
  machineImage: new ec2.AmazonLinuxImage(),
  vpc: vpc,
  disableApiTermination: true,
});
```

### Enabling Instance Hibernation

You can enable [Instance Hibernation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Hibernate.html) for
your EC2 instances by setting the `hibernationEnabled` property to `true`. Instance Hibernation saves the
instance's in-memory (RAM) state when an instance is stopped, and restores that state when the instance is started.

```ts
declare const vpc: ec2.Vpc;

const instance = new ec2.Instance(this, 'Instance', {
  instanceType: ec2.InstanceType.of(ec2.InstanceClass.M5, ec2.InstanceSize.XLARGE),
  machineImage: new ec2.AmazonLinuxImage(),
  vpc: vpc,
  hibernationEnabled: true,
  blockDevices: [{
    deviceName: '/dev/xvda',
    volume: ec2.BlockDeviceVolume.ebs(30, {
      volumeType: ec2.EbsDeviceVolumeType.GP3,
      encrypted: true,
      deleteOnTermination: true,
    }),
  }],
});
```

> NOTE: You must use an instance and a volume that meet the requirements for hibernation.
> For more information, see [Prerequisites for Amazon EC2 instance hibernation](https://docs.aws.amazon.com/enclaves/latest/user/nitro-enclave.html#nitro-enclave-reqs).

## VPC Flow Logs

VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC. Flow log data can be published to Amazon CloudWatch Logs and Amazon S3. After you've created a flow log, you can retrieve and view its data in the chosen destination. (<https://docs.aws.amazon.com/vpc/latest/userguide/flow-logs.html>).

By default, a flow log will be created with CloudWatch Logs as the destination.

You can create a flow log like this:

```ts
declare const vpc: ec2.Vpc;

new ec2.FlowLog(this, 'FlowLog', {
  resourceType: ec2.FlowLogResourceType.fromVpc(vpc)
})
```

Or you can add a Flow Log to a VPC by using the addFlowLog method like this:

```ts
const vpc = new ec2.Vpc(this, 'Vpc');

vpc.addFlowLog('FlowLog');
```

You can also add multiple flow logs with different destinations.

```ts
const vpc = new ec2.Vpc(this, 'Vpc');

vpc.addFlowLog('FlowLogS3', {
  destination: ec2.FlowLogDestination.toS3()
});

// Only reject traffic and interval every minute.
vpc.addFlowLog('FlowLogCloudWatch', {
  trafficType: ec2.FlowLogTrafficType.REJECT,
  maxAggregationInterval: ec2.FlowLogMaxAggregationInterval.ONE_MINUTE,
});
```

To create a Transit Gateway flow log, you can use the `fromTransitGatewayId` method:

```ts
declare const tgw: ec2.CfnTransitGateway;

new ec2.FlowLog(this, 'TransitGatewayFlowLog', {
  resourceType: ec2.FlowLogResourceType.fromTransitGatewayId(tgw.ref)
})
```

To create a Transit Gateway Attachment flow log, you can use the `fromTransitGatewayAttachmentId` method:

```ts
declare const tgwAttachment: ec2.CfnTransitGatewayAttachment;

new ec2.FlowLog(this, 'TransitGatewayAttachmentFlowLog', {
  resourceType: ec2.FlowLogResourceType.fromTransitGatewayAttachmentId(tgwAttachment.ref)
})
```

For flow logs targeting TransitGateway and TransitGatewayAttachment, specifying the `trafficType` is not possible.

### Custom Formatting

You can also custom format flow logs.

```ts
const vpc = new ec2.Vpc(this, 'Vpc');

vpc.addFlowLog('FlowLog', {
  logFormat: [
    ec2.LogFormat.DST_PORT,
    ec2.LogFormat.SRC_PORT,
  ],
});

// If you just want to add a field to the default field
vpc.addFlowLog('FlowLog', {
  logFormat: [
    ec2.LogFormat.VERSION,
    ec2.LogFormat.ALL_DEFAULT_FIELDS,
  ],
});

// If AWS CDK does not support the new fields
vpc.addFlowLog('FlowLog', {
  logFormat: [
    ec2.LogFormat.SRC_PORT,
    ec2.LogFormat.custom('${new-field}'),
  ],
});
```

By default, the CDK will create the necessary resources for the destination. For the CloudWatch Logs destination
it will create a CloudWatch Logs Log Group as well as the IAM role with the necessary permissions to publish to
the log group. In the case of an S3 destination, it will create the S3 bucket.

If you want to customize any of the destination resources you can provide your own as part of the `destination`.

*CloudWatch Logs*

```ts
declare const vpc: ec2.Vpc;

const logGroup = new logs.LogGroup(this, 'MyCustomLogGroup');

const role = new iam.Role(this, 'MyCustomRole', {
  assumedBy: new iam.ServicePrincipal('vpc-flow-logs.amazonaws.com')
});

new ec2.FlowLog(this, 'FlowLog', {
  resourceType: ec2.FlowLogResourceType.fromVpc(vpc),
  destination: ec2.FlowLogDestination.toCloudWatchLogs(logGroup, role)
});
```

*S3*

```ts
declare const vpc: ec2.Vpc;

const bucket = new s3.Bucket(this, 'MyCustomBucket');

new ec2.FlowLog(this, 'FlowLog', {
  resourceType: ec2.FlowLogResourceType.fromVpc(vpc),
  destination: ec2.FlowLogDestination.toS3(bucket)
});

new ec2.FlowLog(this, 'FlowLogWithKeyPrefix', {
  resourceType: ec2.FlowLogResourceType.fromVpc(vpc),
  destination: ec2.FlowLogDestination.toS3(bucket, 'prefix/')
});
```

*Amazon Data Firehose*

```ts
import * as firehose from 'aws-cdk-lib/aws-kinesisfirehose';

declare const vpc: ec2.Vpc;
declare const deliveryStream: firehose.IDeliveryStream;

vpc.addFlowLog('FlowLogsFirehose', {
  destination: ec2.FlowLogDestination.toFirehose(deliveryStream),
});
```

When the S3 destination is configured, AWS will automatically create an S3 bucket policy
that allows the service to write logs to the bucket. This makes it impossible to later update
that bucket policy. To have CDK create the bucket policy so that future updates can be made,
the `@aws-cdk/aws-s3:createDefaultLoggingPolicy` [feature flag](https://docs.aws.amazon.com/cdk/v2/guide/featureflags.html) can be used. This can be set
in the `cdk.json` file.

```json
{
  "context": {
    "@aws-cdk/aws-s3:createDefaultLoggingPolicy": true
  }
}
```

## User Data

User data enables you to run a script when your instances start up.  In order to configure these scripts you can add commands directly to the script
 or you can use the UserData's convenience functions to aid in the creation of your script.

A user data could be configured to run a script found in an asset through the following:

```ts
import { Asset } from 'aws-cdk-lib/aws-s3-assets';

declare const instance: ec2.Instance;

const asset = new Asset(this, 'Asset', {
  path: './configure.sh'
});

const localPath = instance.userData.addS3DownloadCommand({
  bucket:asset.bucket,
  bucketKey:asset.s3ObjectKey,
  region: 'us-east-1', // Optional
});
instance.userData.addExecuteFileCommand({
  filePath:localPath,
  arguments: '--verbose -y'
});
asset.grantRead(instance.role);
```

### Persisting user data

By default, EC2 UserData is run once on only the first time that an instance is started. It is possible to make the
user data script run on every start of the instance.

When creating a Windows UserData you can use the `persist` option to set whether or not to add
`<persist>true</persist>` [to the user data script](https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ec2-windows-user-data.html#user-data-scripts). it can be used as follows:

```ts
const windowsUserData = ec2.UserData.forWindows({ persist: true });
```

For a Linux instance, this can be accomplished by using a Multipart user data to configure cloud-config as detailed
in: https://aws.amazon.com/premiumsupport/knowledge-center/execute-user-data-ec2/

### Multipart user data

In addition, to above the [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) can be used to change instance startup behavior. Multipart user data are composed
from separate parts forming archive. The most common parts are scripts executed during instance set-up. However, there are other
kinds, too.

The advantage of multipart archive is in flexibility when it's needed to add additional parts or to use specialized parts to
fine tune instance startup. Some services (like AWS Batch) support only [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData).

The parts can be executed at different moment of instance start-up and can serve a different purpose. This is controlled by `contentType` property.
For common scripts, `text/x-shellscript; charset="utf-8"` can be used as content type.

In order to create archive the [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) has to be instantiated. Than, user can add parts to multipart archive using `addPart`. The [`MultipartBody`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartBody) contains methods supporting creation of body parts.

If the very custom part is required, it can be created using `MultipartUserData.fromRawBody`, in this case full control over content type,
transfer encoding, and body properties is given to the user.

Below is an example for creating multipart user data with single body part responsible for installing `awscli` and configuring maximum size
of storage used by Docker containers:

```ts
const bootHookConf = ec2.UserData.forLinux();
bootHookConf.addCommands('cloud-init-per once docker_options echo \'OPTIONS="${OPTIONS} --storage-opt dm.basesize=40G"\' >> /etc/sysconfig/docker');

const setupCommands = ec2.UserData.forLinux();
setupCommands.addCommands('sudo yum install awscli && echo Packages installed らと > /var/tmp/setup');

const multipartUserData = new ec2.MultipartUserData();
// The docker has to be configured at early stage, so content type is overridden to boothook
multipartUserData.addPart(ec2.MultipartBody.fromUserData(bootHookConf, 'text/cloud-boothook; charset="us-ascii"'));
// Execute the rest of setup
multipartUserData.addPart(ec2.MultipartBody.fromUserData(setupCommands));

new ec2.LaunchTemplate(this, '', {
  userData: multipartUserData,
  blockDevices: [
    // Block device configuration rest
  ]
});
```

For more information see
[Specifying Multiple User Data Blocks Using a MIME Multi Part Archive](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/bootstrap_container_instance.html#multi-part_user_data)

#### Using add*Command on MultipartUserData

To use the `add*Command` methods, that are inherited from the [`UserData`](/v2/docs/aws-cdk-lib.aws_ec2.UserData) interface, on [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) you must add a part
to the [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) and designate it as the receiver for these methods. This is accomplished by using the `addUserDataPart()`
method on [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) with the `makeDefault` argument set to `true`:

```ts
const multipartUserData = new ec2.MultipartUserData();
const commandsUserData = ec2.UserData.forLinux();
multipartUserData.addUserDataPart(commandsUserData, ec2.MultipartBody.SHELL_SCRIPT, true);

// Adding commands to the multipartUserData adds them to commandsUserData, and vice-versa.
multipartUserData.addCommands('touch /root/multi.txt');
commandsUserData.addCommands('touch /root/userdata.txt');
```

When used on an EC2 instance, the above `multipartUserData` will create both `multi.txt` and `userdata.txt` in `/root`.

## Importing existing subnet

To import an existing Subnet, call `Subnet.fromSubnetAttributes()` or
`Subnet.fromSubnetId()`. Only if you supply the subnet's Availability Zone
and Route Table Ids when calling `Subnet.fromSubnetAttributes()` will you be
able to use the CDK features that use these values (such as selecting one
subnet per AZ).

Importing an existing subnet looks like this:

```ts
// Supply all properties
const subnet1 = ec2.Subnet.fromSubnetAttributes(this, 'SubnetFromAttributes', {
  subnetId: 's-1234',
  availabilityZone: 'pub-az-4465',
  routeTableId: 'rt-145'
});

// Supply only subnet id
const subnet2 = ec2.Subnet.fromSubnetId(this, 'SubnetFromId', 's-1234');
```

## Launch Templates

A Launch Template is a standardized template that contains the configuration information to launch an instance.
They can be used when launching instances on their own, through Amazon EC2 Auto Scaling, EC2 Fleet, and Spot Fleet.
Launch templates enable you to store launch parameters so that you do not have to specify them every time you launch
an instance. For information on Launch Templates please see the
[official documentation](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-launch-templates.html).

The following demonstrates how to create a launch template with an Amazon Machine Image, security group, and an instance profile.

```ts
declare const vpc: ec2.Vpc;

const role = new iam.Role(this, 'Role', {
  assumedBy: new iam.ServicePrincipal('ec2.amazonaws.com'),
});
const instanceProfile = new iam.InstanceProfile(this, 'InstanceProfile', {
  role,
});

const template = new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  launchTemplateName: 'MyTemplateV1',
  versionDescription: 'This is my v1 template',
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  securityGroup: new ec2.SecurityGroup(this, 'LaunchTemplateSG', {
    vpc: vpc,
  }),
  instanceProfile,
});
```

And the following demonstrates how to enable metadata options support.

```ts
new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  httpEndpoint: true,
  httpProtocolIpv6: true,
  httpPutResponseHopLimit: 1,
  httpTokens: ec2.LaunchTemplateHttpTokens.REQUIRED,
  instanceMetadataTags: true,
});
```

And the following demonstrates how to add one or more security groups to launch template.

```ts
declare const vpc: ec2.Vpc;

const sg1 = new ec2.SecurityGroup(this, 'sg1', {
  vpc: vpc,
});
const sg2 = new ec2.SecurityGroup(this, 'sg2', {
  vpc: vpc,
});

const launchTemplate = new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  securityGroup: sg1,
});

launchTemplate.addSecurityGroup(sg2);
```

To use [AWS Systems Manager parameters instead of AMI IDs](https://docs.aws.amazon.com/autoscaling/ec2/userguide/using-systems-manager-parameters.html) in launch templates and resolve the AMI IDs at instance launch time:

```ts
const launchTemplate = new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  machineImage: ec2.MachineImage.resolveSsmParameterAtLaunch('parameterName'),
});
```

To specify the EBS Provisioned Rate for Volume Initialization for a snapshot-backed EBS volume in a launch template, use the `volumeInitializationRate` property. The snapshot can be specified explicitly with `BlockDeviceVolume.ebsFromSnapshot(...)` or inherited from the AMI block device mapping when overriding an existing AMI device such as the root volume.

```ts
const launchTemplate = new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  blockDevices: [
    {
      deviceName: 'deviceName',
      volume: ec2.BlockDeviceVolume.ebsFromSnapshot('snap-1234567890abcdef0', {
        volumeSize: 150,
        volumeInitializationRate: Size.mebibytes(200),
      }),
    },
  ],
});
```

### CPU Options

Specify `cpuOptions` to configure the CPU options for the instances launched with the template.
This is useful, for example, to enable [nested virtualization](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-optimize-cpu.html)
or to customize the number of CPU cores and threads per core:

```ts
new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  cpuOptions: {
    coreCount: 4,
    threadsPerCore: 1,
    nestedVirtualization: true,
  },
});
```

### Placement Group

Specify `placementGroup` to enable the placement group support:

```ts
declare const instanceType: ec2.InstanceType;

const pg = new ec2.PlacementGroup(this, 'test-pg', {
  strategy: ec2.PlacementGroupStrategy.SPREAD,
});

new ec2.LaunchTemplate(this, 'LaunchTemplate', {
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  placementGroup: pg,
});
```

Please note this feature does not support Launch Configurations.

## Detailed Monitoring

The following demonstrates how to enable [Detailed Monitoring](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-cloudwatch-new.html) for an EC2 instance. Keep in mind that Detailed Monitoring results in [additional charges](https://aws.amazon.com/cloudwatch/pricing/).

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;

new ec2.Instance(this, 'Instance1', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  detailedMonitoring: true,
});
```

## Connecting to your instances using SSM Session Manager

SSM Session Manager makes it possible to connect to your instances from the
AWS Console, without preparing SSH keys.

To do so, you need to:

* Use an image with [SSM agent](https://docs.aws.amazon.com/systems-manager/latest/userguide/ssm-agent.html) installed
  and configured. [Many images come with SSM Agent
  preinstalled](https://docs.aws.amazon.com/systems-manager/latest/userguide/ami-preinstalled-agent.html), otherwise you
  may need to manually put instructions to [install SSM
  Agent](https://docs.aws.amazon.com/systems-manager/latest/userguide/sysman-manual-agent-install.html) into your
  instance's UserData or use EC2 Init).
* Create the instance with `ssmSessionPermissions: true`.

If these conditions are met, you can connect to the instance from the EC2 Console. Example:

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;

new ec2.Instance(this, 'Instance1', {
  vpc,
  instanceType,

  // Amazon Linux 2023 comes with SSM Agent by default
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),

  // Turn on SSM
  ssmSessionPermissions: true,
});
```

## Managed Prefix Lists

Create and manage customer-managed prefix lists. If you don't specify anything in this construct, it will manage IPv4 addresses.

You can also create an empty Prefix List with only the maximum number of entries specified, as shown in the following code. If nothing is specified, maxEntries=1.

```ts
new ec2.PrefixList(this, 'EmptyPrefixList', {
  maxEntries: 100,
});
```

`maxEntries` can also be omitted as follows. In this case `maxEntries: 2`, will be set.

```ts
new ec2.PrefixList(this, 'PrefixList', {
  entries: [
    { cidr: '10.0.0.1/32' },
    { cidr: '10.0.0.2/32', description: 'sample1' },
  ],
});
```

To import AWS-managed prefix list, you can use `PrefixList.fromLookup()`.

```ts
ec2.PrefixList.fromLookup(this, 'PrefixListFromName', {
  prefixListName: 'com.amazonaws.global.cloudfront.origin-facing',
});
```

For more information see [Work with customer-managed prefix lists](https://docs.aws.amazon.com/vpc/latest/userguide/working-with-managed-prefix-lists.html).

### IAM instance profile

Use `instanceProfile` to apply specific IAM Instance Profile. Cannot be used with role

```ts
declare const instanceType: ec2.InstanceType;
declare const vpc: ec2.Vpc;

const role = new iam.Role(this, 'Role', {
  assumedBy: new iam.ServicePrincipal('ec2.amazonaws.com'),
});
const instanceProfile = new iam.InstanceProfile(this, 'InstanceProfile', {
  role,
});

new ec2.Instance(this, 'Instance', {
  vpc,
  instanceType,
  machineImage: ec2.MachineImage.latestAmazonLinux2023(),
  instanceProfile,
});
```

## Types

| Name | Kind | Summary |
| --- | --- | --- |
| [`BastionHostLinux`](/v2/docs/aws-cdk-lib.aws_ec2.BastionHostLinux) | Construct (L2) | This creates a linux bastion host you can use to connect to other instances or services in your VPC. |
| [`ClientVpnAuthorizationRule`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnAuthorizationRule) | Construct (L2) | A client VPN authorization rule. |
| [`ClientVpnEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnEndpoint) | Construct (L2) | A client VPN connection. |
| [`ClientVpnRoute`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnRoute) | Construct (L2) | A client VPN route. |
| [`FlowLog`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLog) | Construct (L2) | A VPC flow log. |
| [`GatewayVpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.GatewayVpcEndpoint) | Construct (L2) | A gateway VPC endpoint. |
| [`Instance`](/v2/docs/aws-cdk-lib.aws_ec2.Instance) | Construct (L2) | This represents a single EC2 instance. |
| [`InterfaceVpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpoint) | Construct (L2) | A interface VPC endpoint. |
| [`KeyPair`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPair) | Construct (L2) | An EC2 Key Pair. |
| [`LaunchTemplate`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplate) | Construct (L2) | This represents an EC2 LaunchTemplate. |
| [`NetworkAcl`](/v2/docs/aws-cdk-lib.aws_ec2.NetworkAcl) | Construct (L2) | Define a new custom network ACL. |
| [`NetworkAclEntry`](/v2/docs/aws-cdk-lib.aws_ec2.NetworkAclEntry) | Construct (L2) | Define an entry in a Network ACL table. |
| [`PlacementGroup`](/v2/docs/aws-cdk-lib.aws_ec2.PlacementGroup) | Construct (L2) | Defines a placement group. |
| [`PrefixList`](/v2/docs/aws-cdk-lib.aws_ec2.PrefixList) | Construct (L2) | A managed prefix list. |
| [`PrivateSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.PrivateSubnet) | Construct (L2) | Represents a private VPC subnet resource. |
| [`PublicSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.PublicSubnet) | Construct (L2) | Represents a public VPC subnet resource. |
| [`SecurityGroup`](/v2/docs/aws-cdk-lib.aws_ec2.SecurityGroup) | Construct (L2) | Creates an Amazon EC2 security group within a VPC. |
| [`Subnet`](/v2/docs/aws-cdk-lib.aws_ec2.Subnet) | Construct (L2) | Represents a new VPC subnet resource. |
| [`SubnetNetworkAclAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetNetworkAclAssociation) | Construct (L2) |  |
| [`Volume`](/v2/docs/aws-cdk-lib.aws_ec2.Volume) | Construct (L2) | Creates a new EBS Volume in AWS EC2. |
| [`Vpc`](/v2/docs/aws-cdk-lib.aws_ec2.Vpc) | Construct (L2) | Define an AWS Virtual Private Cloud. |
| [`VpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpoint) | Construct (L2) |  |
| [`VpcEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointService) | Construct (L2) | A VPC endpoint service. |
| [`VpnConnection`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnection) | Construct (L2) | Define a VPN Connection. |
| [`VpnConnectionBase`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnectionBase) | Construct (L2) | Base class for Vpn connections. |
| [`VpnGateway`](/v2/docs/aws-cdk-lib.aws_ec2.VpnGateway) | Construct (L2) | The VPN Gateway that shall be added to the VPC. |
| [`CfnApplicationStatusCheck`](/v2/docs/aws-cdk-lib.aws_ec2.CfnApplicationStatusCheck) | Construct (L1) | An application status check monitors an HTTP or HTTPS endpoint on Amazon EC2 instances and reports application-layer health. |
| [`CfnCapacityManagerDataExport`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityManagerDataExport) | Construct (L1) | Creates a new data export configuration for EC2 Capacity Manager. |
| [`CfnCapacityReservation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservation) | Construct (L1) | Creates a new Capacity Reservation with the specified attributes. |
| [`CfnCapacityReservationFleet`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservationFleet) | Construct (L1) | Creates a new Capacity Reservation Fleet with the specified attributes. |
| [`CfnCarrierGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCarrierGateway) | Construct (L1) | Creates a carrier gateway. |
| [`CfnClientVpnAuthorizationRule`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnAuthorizationRule) | Construct (L1) | Specifies an ingress authorization rule to add to a Client VPN endpoint. |
| [`CfnClientVpnEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint) | Construct (L1) | Specifies a Client VPN endpoint. |
| [`CfnClientVpnRoute`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnRoute) | Construct (L1) | Specifies a network route to add to a Client VPN endpoint. |
| [`CfnClientVpnTargetNetworkAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnTargetNetworkAssociation) | Construct (L1) | Specifies a target network to associate with a Client VPN endpoint. |
| [`CfnCustomerGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCustomerGateway) | Construct (L1) | Specifies a customer gateway. |
| [`CfnDHCPOptions`](/v2/docs/aws-cdk-lib.aws_ec2.CfnDHCPOptions) | Construct (L1) | Specifies a set of DHCP options for your VPC. |
| [`CfnEC2Fleet`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet) | Construct (L1) | Specifies the configuration information to launch a fleet--or group--of instances. |
| [`CfnEgressOnlyInternetGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEgressOnlyInternetGateway) | Construct (L1) | [IPv6 only] Specifies an egress-only internet gateway for your VPC. |
| [`CfnEIP`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEIP) | Construct (L1) | Specifies an Elastic IP (EIP) address and can, optionally, associate it with an Amazon EC2 instance. |
| [`CfnEIPAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEIPAssociation) | Construct (L1) | Associates an Elastic IP address with an instance or a network interface. |
| [`CfnEnclaveCertificateIamRoleAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEnclaveCertificateIamRoleAssociation) | Construct (L1) | Associates an AWS Identity and Access Management (IAM) role with an Certificate Manager (ACM) certificate. |
| [`CfnFlowLog`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFlowLog) | Construct (L1) | Specifies a VPC flow log that captures IP traffic for a specified network interface, subnet, or VPC. |
| [`CfnFpgaImage`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFpgaImage) | Construct (L1) | Creates and manages an Amazon FPGA Image (AFI) from a design checkpoint (DCP). |
| [`CfnGatewayRouteTableAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnGatewayRouteTableAssociation) | Construct (L1) | Associates a virtual private gateway or internet gateway with a route table. |
| [`CfnHost`](/v2/docs/aws-cdk-lib.aws_ec2.CfnHost) | Construct (L1) | Allocates a fully dedicated physical server for launching EC2 instances. |
| [`CfnInstance`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance) | Construct (L1) | Specifies an EC2 instance. |
| [`CfnInstanceConnectEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceConnectEndpoint) | Construct (L1) | Creates an EC2 Instance Connect Endpoint. |
| [`CfnInstanceEventWindow`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceEventWindow) | Construct (L1) | Resource type definition for AWS::EC2::InstanceEventWindow. |
| [`CfnInternetGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInternetGateway) | Construct (L1) | Allocates an internet gateway for use with a VPC. |
| [`CfnIPAM`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAM) | Construct (L1) | IPAM is a VPC feature that you can use to automate your IP address management workflows including assigning, tracking, troubleshooting, and auditing IP addresses across AWS Regions and accounts throughout your AWS Organization. |
| [`CfnIPAMAllocation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMAllocation) | Construct (L1) | In IPAM, an allocation is a CIDR assignment from an IPAM pool to another IPAM pool or to a resource. |
| [`CfnIpamExternalResourceVerificationToken`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpamExternalResourceVerificationToken) | Construct (L1) | A verification token is an AWS-generated random value that you can use to prove ownership of an external resource. |
| [`CfnIpamInternetRegistryAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpamInternetRegistryAssociation) | Construct (L1) | An association between an IPAM and a Regional Internet Registry (RIR) for delegated Resource Public Key Infrastructure (RPKI) management. |
| [`CfnIPAMPool`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPool) | Construct (L1) | In IPAM, a pool is a collection of contiguous IP addresses CIDRs. |
| [`CfnIPAMPoolCidr`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPoolCidr) | Construct (L1) | A CIDR provisioned to an IPAM pool. |
| [`CfnIPAMPrefixListResolver`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolver) | Construct (L1) | Resource Type definition for AWS::EC2::IPAMPrefixListResolver. |
| [`CfnIPAMPrefixListResolverTarget`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolverTarget) | Construct (L1) | Resource Type definition for AWS::EC2::IPAMPrefixListResolverTarget. |
| [`CfnIPAMResourceDiscovery`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscovery) | Construct (L1) | A resource discovery is an IPAM component that enables IPAM to manage and monitor resources that belong to the owning account. |
| [`CfnIPAMResourceDiscoveryAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscoveryAssociation) | Construct (L1) | An IPAM resource discovery association. |
| [`CfnIPAMScope`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMScope) | Construct (L1) | In IPAM, a scope is the highest-level container within IPAM. |
| [`CfnIpPoolRouteTableAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpPoolRouteTableAssociation) | Construct (L1) | A route server association is the connection established between a route server and a VPC. |
| [`CfnIPv4Pool`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPv4Pool) | Construct (L1) | Resource Type definition for AWS::EC2::IPv4Pool. |
| [`CfnKeyPair`](/v2/docs/aws-cdk-lib.aws_ec2.CfnKeyPair) | Construct (L1) | Specifies a key pair for use with an Amazon Elastic Compute Cloud instance as follows:. |
| [`CfnLaunchTemplate`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate) | Construct (L1) | Specifies the properties for creating a launch template. |
| [`CfnLocalGatewayRoute`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRoute) | Construct (L1) | Creates a static route for the specified local gateway route table. You must specify one of the following targets:. |
| [`CfnLocalGatewayRouteTable`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTable) | Construct (L1) | Describes a local gateway route table. |
| [`CfnLocalGatewayRouteTableVirtualInterfaceGroupAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTableVirtualInterfaceGroupAssociation) | Construct (L1) | Describes an association between a local gateway route table and a virtual interface group. |
| [`CfnLocalGatewayRouteTableVPCAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTableVPCAssociation) | Construct (L1) | Associates the specified VPC with the specified local gateway route table. |
| [`CfnLocalGatewayVirtualInterface`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayVirtualInterface) | Construct (L1) | Describes a local gateway virtual interface. |
| [`CfnLocalGatewayVirtualInterfaceGroup`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayVirtualInterfaceGroup) | Construct (L1) | Describes a local gateway virtual interface group. |
| [`CfnNatGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNatGateway) | Construct (L1) | Specifies a network address translation (NAT) gateway in the specified subnet. |
| [`CfnNetworkAcl`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAcl) | Construct (L1) | Specifies a network ACL for your VPC. |
| [`CfnNetworkAclEntry`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAclEntry) | Construct (L1) | Specifies an entry, known as a rule, in a network ACL with a rule number you specify. |
| [`CfnNetworkInsightsAccessScope`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope) | Construct (L1) | Describes a Network Access Scope. |
| [`CfnNetworkInsightsAccessScopeAnalysis`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScopeAnalysis) | Construct (L1) | Describes a Network Access Scope analysis. |
| [`CfnNetworkInsightsAnalysis`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis) | Construct (L1) | Specifies a network insights analysis. |
| [`CfnNetworkInsightsPath`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsPath) | Construct (L1) | Specifies a path to analyze for reachability. |
| [`CfnNetworkInterface`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface) | Construct (L1) | Describes a network interface in an Amazon EC2 instance for AWS CloudFormation . |
| [`CfnNetworkInterfaceAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfaceAttachment) | Construct (L1) | Attaches an elastic network interface (ENI) to an Amazon EC2 instance. |
| [`CfnNetworkInterfacePermission`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfacePermission) | Construct (L1) | Specifies a permission for the network interface, For example, you can grant an AWS -authorized account permission to attach the network interface to an instance in their account. |
| [`CfnNetworkPerformanceMetricSubscription`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkPerformanceMetricSubscription) | Construct (L1) | Describes Infrastructure Performance subscriptions. |
| [`CfnPlacementGroup`](/v2/docs/aws-cdk-lib.aws_ec2.CfnPlacementGroup) | Construct (L1) | Specifies a placement group in which to launch instances. |
| [`CfnPrefixList`](/v2/docs/aws-cdk-lib.aws_ec2.CfnPrefixList) | Construct (L1) | Specifies a managed prefix list. |
| [`CfnRoute`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRoute) | Construct (L1) | Specifies a route in a route table. For more information, see [Routes](https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Route_Tables.html#route-table-routes) in the *Amazon VPC User Guide* . |
| [`CfnRouteServer`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServer) | Construct (L1) | Specifies a route server to manage dynamic routing in a VPC. |
| [`CfnRouteServerAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerAssociation) | Construct (L1) | Specifies the association between a route server and a VPC. |
| [`CfnRouteServerEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerEndpoint) | Construct (L1) | Creates a new endpoint for a route server in a specified subnet. |
| [`CfnRouteServerPeer`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerPeer) | Construct (L1) | Specifies a BGP peer configuration for a route server endpoint. |
| [`CfnRouteServerPropagation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerPropagation) | Construct (L1) | Specifies route propagation from a route server to a route table. |
| [`CfnRouteTable`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteTable) | Construct (L1) | Specifies a route table for the specified VPC. |
| [`CfnSecondaryNetwork`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecondaryNetwork) | Construct (L1) | Resource Type definition for AWS::EC2::SecondaryNetwork. |
| [`CfnSecurityGroup`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroup) | Construct (L1) | Specifies a security group. |
| [`CfnSecurityGroupEgress`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupEgress) | Construct (L1) | Adds the specified outbound (egress) rule to a security group. |
| [`CfnSecurityGroupIngress`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupIngress) | Construct (L1) | Adds an inbound (ingress) rule to a security group. |
| [`CfnSecurityGroupVpcAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupVpcAssociation) | Construct (L1) | A security group association with a VPC. |
| [`CfnSnapshotBlockPublicAccess`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSnapshotBlockPublicAccess) | Construct (L1) | Specifies the state of the *block public access for snapshots* setting for the Region. |
| [`CfnSpotFleet`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet) | Construct (L1) | Specifies a Spot Fleet request. |
| [`CfnSqlHaStandbyDetectedInstance`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSqlHaStandbyDetectedInstance) | Construct (L1) | Resource Type definition for AWS::EC2::SqlHaStandbyDetectedInstance. |
| [`CfnSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnet) | Construct (L1) | Specifies a subnet for the specified VPC. |
| [`CfnSubnetCidrBlock`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetCidrBlock) | Construct (L1) | Associates a CIDR block with your subnet. |
| [`CfnSubnetCidrReservation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetCidrReservation) | Construct (L1) | Resource Type definition for a CIDR range reserved inside an Amazon EC2 subnet. |
| [`CfnSubnetNetworkAclAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetNetworkAclAssociation) | Construct (L1) | Associates a subnet with a network ACL. For more information, see [ReplaceNetworkAclAssociation](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-ReplaceNetworkAclAssociation.html) in the *Amazon EC2 API Reference* . |
| [`CfnSubnetRouteTableAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetRouteTableAssociation) | Construct (L1) | Associates a subnet with a route table. |
| [`CfnTrafficMirrorFilter`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorFilter) | Construct (L1) | Specifies a Traffic Mirror filter. |
| [`CfnTrafficMirrorFilterRule`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorFilterRule) | Construct (L1) | Creates a Traffic Mirror filter rule. |
| [`CfnTrafficMirrorSession`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorSession) | Construct (L1) | Creates a Traffic Mirror session. |
| [`CfnTrafficMirrorTarget`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorTarget) | Construct (L1) | Specifies a target for your Traffic Mirror session. |
| [`CfnTransitGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGateway) | Construct (L1) | Specifies a transit gateway. |
| [`CfnTransitGatewayAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayAttachment) | Construct (L1) | Attaches a VPC to a transit gateway. |
| [`CfnTransitGatewayConnect`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnect) | Construct (L1) | Creates a Connect attachment from a specified transit gateway attachment. |
| [`CfnTransitGatewayConnectPeer`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnectPeer) | Construct (L1) | Describes a transit gateway Connect peer. |
| [`CfnTransitGatewayMeteringPolicy`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMeteringPolicy) | Construct (L1) | Describes a transit gateway metering policy. |
| [`CfnTransitGatewayMeteringPolicyEntry`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMeteringPolicyEntry) | Construct (L1) | Creates an entry in a transit gateway metering policy to define traffic measurement rules. |
| [`CfnTransitGatewayMulticastDomain`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastDomain) | Construct (L1) | Creates a multicast domain using the specified transit gateway. |
| [`CfnTransitGatewayMulticastDomainAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastDomainAssociation) | Construct (L1) | Associates the specified subnets and transit gateway attachments with the specified transit gateway multicast domain. |
| [`CfnTransitGatewayMulticastGroupMember`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastGroupMember) | Construct (L1) | Registers members (network interfaces) with the transit gateway multicast group. |
| [`CfnTransitGatewayMulticastGroupSource`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastGroupSource) | Construct (L1) | Registers sources (network interfaces) with the specified transit gateway multicast domain. |
| [`CfnTransitGatewayPeeringAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPeeringAttachment) | Construct (L1) | Requests a transit gateway peering attachment between the specified transit gateway (requester) and a peer transit gateway (accepter). |
| [`CfnTransitGatewayPolicyTable`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTable) | Construct (L1) | AWS::EC2::TransitGatewayPolicyTable Resource Definition. |
| [`CfnTransitGatewayPolicyTableAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableAssociation) | Construct (L1) | AWS::EC2::TransitGatewayPolicyTableAssociation Resource Definition. |
| [`CfnTransitGatewayPolicyTableEntry`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableEntry) | Construct (L1) | AWS::EC2::TransitGatewayPolicyTableEntry Resource Definition. |
| [`CfnTransitGatewayRoute`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRoute) | Construct (L1) | Specifies a static route for a transit gateway route table. |
| [`CfnTransitGatewayRouteTable`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTable) | Construct (L1) | Specifies a route table for a transit gateway. |
| [`CfnTransitGatewayRouteTableAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTableAssociation) | Construct (L1) | Associates the specified attachment with the specified transit gateway route table. |
| [`CfnTransitGatewayRouteTablePropagation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTablePropagation) | Construct (L1) | Enables the specified attachment to propagate routes to the specified propagation route table. |
| [`CfnTransitGatewayVpcAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayVpcAttachment) | Construct (L1) | Specifies a VPC attachment. |
| [`CfnVerifiedAccessEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint) | Construct (L1) | An AWS Verified Access endpoint specifies the application that AWS Verified Access provides access to. |
| [`CfnVerifiedAccessGroup`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessGroup) | Construct (L1) | An AWS Verified Access group is a collection of AWS Verified Access endpoints who's associated applications have similar security requirements. |
| [`CfnVerifiedAccessInstance`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance) | Construct (L1) | An AWS Verified Access instance is a regional entity that evaluates application requests and grants access only when your security requirements are met. |
| [`CfnVerifiedAccessTrustProvider`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProvider) | Construct (L1) | A trust provider is a third-party entity that creates, maintains, and manages identity information for users and devices. |
| [`CfnVolume`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVolume) | Construct (L1) | Specifies an Amazon Elastic Block Store (Amazon EBS) volume. |
| [`CfnVolumeAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVolumeAttachment) | Construct (L1) | Attaches an Amazon EBS volume to a running instance and exposes it to the instance with the specified device name. |
| [`CfnVPC`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPC) | Construct (L1) | Specifies a virtual private cloud (VPC). |
| [`CfnVPCBlockPublicAccessExclusion`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCBlockPublicAccessExclusion) | Construct (L1) | Create a VPC Block Public Access (BPA) exclusion. |
| [`CfnVPCBlockPublicAccessOptions`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCBlockPublicAccessOptions) | Construct (L1) | VPC Block Public Access (BPA) enables you to block resources in VPCs and subnets that you own in a Region from reaching or being reached from the internet through internet gateways and egress-only internet gateways. |
| [`CfnVPCCidrBlock`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCCidrBlock) | Construct (L1) | Associates a CIDR block with your VPC. |
| [`CfnVPCDHCPOptionsAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCDHCPOptionsAssociation) | Construct (L1) | Associates a set of DHCP options with a VPC, or associates no DHCP options with the VPC. |
| [`CfnVPCEncryptionControl`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEncryptionControl) | Construct (L1) | Describes the configuration and state of VPC encryption controls. |
| [`CfnVPCEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpoint) | Construct (L1) | Specifies a VPC endpoint. |
| [`CfnVPCEndpointConnectionNotification`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointConnectionNotification) | Construct (L1) | Specifies a connection notification for a VPC endpoint or VPC endpoint service. |
| [`CfnVPCEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointService) | Construct (L1) | Creates a VPC endpoint service configuration to which service consumers ( AWS accounts, users, and IAM roles) can connect. |
| [`CfnVPCEndpointServicePermissions`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointServicePermissions) | Construct (L1) | Grant or revoke permissions for service consumers (users, IAM roles, and AWS accounts) to connect to a VPC endpoint service. |
| [`CfnVPCGatewayAttachment`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCGatewayAttachment) | Construct (L1) | Attaches an internet gateway, or a virtual private gateway to a VPC, enabling connectivity between the internet and the VPC. |
| [`CfnVPCPeeringConnection`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCPeeringConnection) | Construct (L1) | Requests a VPC peering connection between two VPCs: a requester VPC that you own and an accepter VPC with which to create the connection. |
| [`CfnVPNConcentrator`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConcentrator) | Construct (L1) | Describes a VPN concentrator. |
| [`CfnVPNConnection`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection) | Construct (L1) | Specifies a VPN connection between a virtual private gateway and a VPN customer gateway or a transit gateway and a VPN customer gateway. |
| [`CfnVPNConnectionRoute`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnectionRoute) | Construct (L1) | Specifies a static route for a VPN connection between an existing virtual private gateway and a VPN customer gateway. |
| [`CfnVPNGateway`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNGateway) | Construct (L1) | Specifies a virtual private gateway. |
| [`CfnVPNGatewayRoutePropagation`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNGatewayRoutePropagation) | Construct (L1) | Enables a virtual private gateway (VGW) to propagate routes to the specified route table of a VPC. |
| [`AcceleratorManufacturer`](/v2/docs/aws-cdk-lib.aws_ec2.AcceleratorManufacturer) | Enum | Supported hardware accelerator manufacturers. |
| [`AcceleratorName`](/v2/docs/aws-cdk-lib.aws_ec2.AcceleratorName) | Enum | Specific hardware accelerator models supported by EC2. |
| [`AcceleratorType`](/v2/docs/aws-cdk-lib.aws_ec2.AcceleratorType) | Enum | Hardware accelerator categories available for EC2 instances. |
| [`AclCidr`](/v2/docs/aws-cdk-lib.aws_ec2.AclCidr) | Class | Either an IPv4 or an IPv6 CIDR. |
| [`AclCidrConfig`](/v2/docs/aws-cdk-lib.aws_ec2.AclCidrConfig) | Struct | Acl Configuration for CIDR. |
| [`AclIcmp`](/v2/docs/aws-cdk-lib.aws_ec2.AclIcmp) | Struct | Properties to create Icmp. |
| [`AclPortRange`](/v2/docs/aws-cdk-lib.aws_ec2.AclPortRange) | Struct | Properties to create PortRange. |
| [`AclTraffic`](/v2/docs/aws-cdk-lib.aws_ec2.AclTraffic) | Class | The traffic that is configured using a Network ACL entry. |
| [`AclTrafficConfig`](/v2/docs/aws-cdk-lib.aws_ec2.AclTrafficConfig) | Struct | Acl Configuration for traffic. |
| [`Action`](/v2/docs/aws-cdk-lib.aws_ec2.Action) | Enum | What action to apply to traffic matching the ACL. |
| [`AddNatGatewayOptions`](/v2/docs/aws-cdk-lib.aws_ec2.AddNatGatewayOptions) | Struct | Options for adding a NAT gateway to a public subnet. |
| [`AddressFamily`](/v2/docs/aws-cdk-lib.aws_ec2.AddressFamily) | Enum | The IP address type. |
| [`AddRouteOptions`](/v2/docs/aws-cdk-lib.aws_ec2.AddRouteOptions) | Struct | Options for adding a new route to a subnet. |
| [`AllocateCidrRequest`](/v2/docs/aws-cdk-lib.aws_ec2.AllocateCidrRequest) | Struct | Request for subnets CIDR to be allocated for a Vpc. |
| [`AllocatedSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.AllocatedSubnet) | Struct | CIDR Allocated Subnet. |
| [`AllocateIpv6CidrRequest`](/v2/docs/aws-cdk-lib.aws_ec2.AllocateIpv6CidrRequest) | Struct | Request for subnet IPv6 CIDRs to be allocated for a VPC. |
| [`AllocateVpcIpv6CidrRequest`](/v2/docs/aws-cdk-lib.aws_ec2.AllocateVpcIpv6CidrRequest) | Struct | Request for allocation of the VPC IPv6 CIDR. |
| [`AmazonLinux2022ImageSsmParameter`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2022ImageSsmParameter) | Class | A SSM Parameter that contains the AMI ID for Amazon Linux 2023. |
| [`AmazonLinux2022ImageSsmParameterProps`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2022ImageSsmParameterProps) | Struct | Properties specific to al2022 images. |
| [`AmazonLinux2022Kernel`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2022Kernel) | Class | Amazon Linux 2022 kernel versions. |
| [`AmazonLinux2023ImageSsmParameter`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2023ImageSsmParameter) | Class | A SSM Parameter that contains the AMI ID for Amazon Linux 2023. |
| [`AmazonLinux2023ImageSsmParameterProps`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2023ImageSsmParameterProps) | Struct | Properties specific to al2023 images. |
| [`AmazonLinux2023Kernel`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2023Kernel) | Class | Amazon Linux 2023 kernel versions. |
| [`AmazonLinux2ImageSsmParameter`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2ImageSsmParameter) | Class | A SSM Parameter that contains the AMI ID for Amazon Linux 2. |
| [`AmazonLinux2ImageSsmParameterProps`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2ImageSsmParameterProps) | Struct | Properties specific to amzn2 images. |
| [`AmazonLinux2Kernel`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinux2Kernel) | Class | Amazon Linux 2 kernel versions. |
| [`AmazonLinuxCpuType`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxCpuType) | Enum | CPU type. |
| [`AmazonLinuxEdition`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxEdition) | Enum | Amazon Linux edition. |
| [`AmazonLinuxGeneration`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxGeneration) | Enum | What generation of Amazon Linux to use. |
| [`AmazonLinuxImage`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImage) | Class | Selects the latest version of Amazon Linux. |
| [`AmazonLinuxImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImageProps) | Struct | Amazon Linux image properties. |
| [`AmazonLinuxImageSsmParameterBase`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImageSsmParameterBase) | Class |  |
| [`AmazonLinuxImageSsmParameterBaseOptions`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImageSsmParameterBaseOptions) | Struct | Base options for amazon linux ssm parameters. |
| [`AmazonLinuxImageSsmParameterBaseProps`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImageSsmParameterBaseProps) | Struct | Base properties for an Amazon Linux SSM Parameter. |
| [`AmazonLinuxImageSsmParameterCommonOptions`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxImageSsmParameterCommonOptions) | Struct | Common options across all generations. |
| [`AmazonLinuxKernel`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxKernel) | Enum | Amazon Linux Kernel. |
| [`AmazonLinuxStorage`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxStorage) | Enum | Available storage options for Amazon Linux images Only applies to Amazon Linux & Amazon Linux 2. |
| [`AmazonLinuxVirt`](/v2/docs/aws-cdk-lib.aws_ec2.AmazonLinuxVirt) | Enum | Virtualization type for Amazon Linux. |
| [`ApplyCloudFormationInitOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ApplyCloudFormationInitOptions) | Struct | Options for applying CloudFormation init to an instance or instance group. |
| [`AttachInitOptions`](/v2/docs/aws-cdk-lib.aws_ec2.AttachInitOptions) | Struct | Options for attaching a CloudFormationInit to a resource. |
| [`AvailabilityZoneAddress`](/v2/docs/aws-cdk-lib.aws_ec2.AvailabilityZoneAddress) | Struct | Configuration for a specific Availability Zone in a Regional NAT Gateway. |
| [`AwsIpamProps`](/v2/docs/aws-cdk-lib.aws_ec2.AwsIpamProps) | Struct | Configuration for AwsIpam. |
| [`BareMetal`](/v2/docs/aws-cdk-lib.aws_ec2.BareMetal) | Enum | Bare metal support requirements for EC2 instances. |
| [`BastionHostLinuxProps`](/v2/docs/aws-cdk-lib.aws_ec2.BastionHostLinuxProps) | Struct | Properties of the bastion host. |
| [`BlockDevice`](/v2/docs/aws-cdk-lib.aws_ec2.BlockDevice) | Struct | Block device. |
| [`BlockDeviceVolume`](/v2/docs/aws-cdk-lib.aws_ec2.BlockDeviceVolume) | Class | Describes a block device mapping for an EC2 instance or Auto Scaling group. |
| [`BurstablePerformance`](/v2/docs/aws-cdk-lib.aws_ec2.BurstablePerformance) | Enum | Burstable CPU performance requirements for EC2 instances. |
| [`CfnApplicationStatusCheck.HealthCheckPathDestinationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnApplicationStatusCheck.HealthCheckPathDestinationProperty) | Struct |  |
| [`CfnApplicationStatusCheck.HealthCheckPathProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnApplicationStatusCheck.HealthCheckPathProperty) | Struct |  |
| [`CfnApplicationStatusCheck.HealthCheckPathSourceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnApplicationStatusCheck.HealthCheckPathSourceProperty) | Struct |  |
| [`CfnApplicationStatusCheckProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnApplicationStatusCheckProps) | Struct | Properties for defining a `CfnApplicationStatusCheck`. |
| [`CfnCapacityManagerDataExportProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityManagerDataExportProps) | Struct | Properties for defining a `CfnCapacityManagerDataExport`. |
| [`CfnCapacityReservation.CapacityAllocationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservation.CapacityAllocationProperty) | Struct | Information about instance capacity usage for a Capacity Reservation. |
| [`CfnCapacityReservation.CommitmentInfoProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservation.CommitmentInfoProperty) | Struct | Information about your commitment for a future-dated Capacity Reservation. |
| [`CfnCapacityReservation.TagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservation.TagSpecificationProperty) | Struct | An array of key-value pairs to apply to this resource. |
| [`CfnCapacityReservationFleet.InstanceTypeSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservationFleet.InstanceTypeSpecificationProperty) | Struct | Specifies information about an instance type to use in a Capacity Reservation Fleet. |
| [`CfnCapacityReservationFleet.TagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservationFleet.TagSpecificationProperty) | Struct | The tags to apply to a resource when the resource is being created. |
| [`CfnCapacityReservationFleetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservationFleetProps) | Struct | Properties for defining a `CfnCapacityReservationFleet`. |
| [`CfnCapacityReservationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCapacityReservationProps) | Struct | Properties for defining a `CfnCapacityReservation`. |
| [`CfnCarrierGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCarrierGatewayProps) | Struct | Properties for defining a `CfnCarrierGateway`. |
| [`CfnClientVpnAuthorizationRuleProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnAuthorizationRuleProps) | Struct | Properties for defining a `CfnClientVpnAuthorizationRule`. |
| [`CfnClientVpnEndpoint.AuthorizationPolicyProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.AuthorizationPolicyProperty) | Struct |  |
| [`CfnClientVpnEndpoint.CertificateAuthenticationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.CertificateAuthenticationRequestProperty) | Struct | Information about the client certificate to be used for authentication. |
| [`CfnClientVpnEndpoint.ClientAuthenticationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.ClientAuthenticationRequestProperty) | Struct | Describes the authentication method to be used by a Client VPN endpoint. |
| [`CfnClientVpnEndpoint.ClientConnectOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.ClientConnectOptionsProperty) | Struct | Indicates whether client connect options are enabled. |
| [`CfnClientVpnEndpoint.ClientLoginBannerOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.ClientLoginBannerOptionsProperty) | Struct | Options for enabling a customizable text banner that will be displayed on AWS provided clients when a VPN session is established. |
| [`CfnClientVpnEndpoint.ClientRouteEnforcementOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.ClientRouteEnforcementOptionsProperty) | Struct | Client Route Enforcement is a feature of Client VPN that helps enforce administrator defined routes on devices connected through the VPN. |
| [`CfnClientVpnEndpoint.ConnectionLogOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.ConnectionLogOptionsProperty) | Struct | Describes the client connection logging options for the Client VPN endpoint. |
| [`CfnClientVpnEndpoint.DevicePostureOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.DevicePostureOptionsProperty) | Struct |  |
| [`CfnClientVpnEndpoint.DevicePostureTrustProviderProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.DevicePostureTrustProviderProperty) | Struct |  |
| [`CfnClientVpnEndpoint.DirectoryServiceAuthenticationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.DirectoryServiceAuthenticationRequestProperty) | Struct | Describes the Active Directory to be used for client authentication. |
| [`CfnClientVpnEndpoint.FederatedAuthenticationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.FederatedAuthenticationRequestProperty) | Struct | The IAM SAML identity provider used for federated authentication. |
| [`CfnClientVpnEndpoint.TagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.TagSpecificationProperty) | Struct | Specifies the tags to apply to the Client VPN endpoint. |
| [`CfnClientVpnEndpoint.TransitGatewayConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpoint.TransitGatewayConfigurationProperty) | Struct |  |
| [`CfnClientVpnEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnEndpointProps) | Struct | Properties for defining a `CfnClientVpnEndpoint`. |
| [`CfnClientVpnRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnRouteProps) | Struct | Properties for defining a `CfnClientVpnRoute`. |
| [`CfnClientVpnTargetNetworkAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnClientVpnTargetNetworkAssociationProps) | Struct | Properties for defining a `CfnClientVpnTargetNetworkAssociation`. |
| [`CfnCustomerGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnCustomerGatewayProps) | Struct | Properties for defining a `CfnCustomerGateway`. |
| [`CfnDHCPOptionsProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnDHCPOptionsProps) | Struct | Properties for defining a `CfnDHCPOptions`. |
| [`CfnEC2Fleet.AcceleratorCountRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.AcceleratorCountRequestProperty) | Struct | The minimum and maximum number of accelerators (GPUs, FPGAs, or AWS Inferentia chips) on an instance. |
| [`CfnEC2Fleet.AcceleratorTotalMemoryMiBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.AcceleratorTotalMemoryMiBRequestProperty) | Struct | The minimum and maximum amount of total accelerator memory, in MiB. |
| [`CfnEC2Fleet.BaselineEbsBandwidthMbpsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.BaselineEbsBandwidthMbpsRequestProperty) | Struct | The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. |
| [`CfnEC2Fleet.BaselinePerformanceFactorsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.BaselinePerformanceFactorsRequestProperty) | Struct | The baseline performance to consider, using an instance family as a baseline reference. |
| [`CfnEC2Fleet.BlockDeviceMappingProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.BlockDeviceMappingProperty) | Struct | Describes a block device mapping, which defines the EBS volumes and instance store volumes to attach to an instance at launch. |
| [`CfnEC2Fleet.CapacityRebalanceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.CapacityRebalanceProperty) | Struct | The Spot Instance replacement strategy to use when Amazon EC2 emits a rebalance notification signal that your Spot Instance is at an elevated risk of being interrupted. |
| [`CfnEC2Fleet.CapacityReservationOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.CapacityReservationOptionsRequestProperty) | Struct | Describes the strategy for using unused Capacity Reservations for fulfilling On-Demand capacity. |
| [`CfnEC2Fleet.CapacityReservationTargetRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.CapacityReservationTargetRequestProperty) | Struct |  |
| [`CfnEC2Fleet.CpuPerformanceFactorRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.CpuPerformanceFactorRequestProperty) | Struct | The CPU performance to consider, using an instance family as the baseline reference. |
| [`CfnEC2Fleet.EbsBlockDeviceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.EbsBlockDeviceProperty) | Struct | Describes a block device for an EBS volume. |
| [`CfnEC2Fleet.FleetLaunchTemplateConfigRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.FleetLaunchTemplateConfigRequestProperty) | Struct | Specifies a launch template and overrides for an EC2 Fleet. |
| [`CfnEC2Fleet.FleetLaunchTemplateOverridesRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.FleetLaunchTemplateOverridesRequestProperty) | Struct | Specifies overrides for a launch template for an EC2 Fleet. |
| [`CfnEC2Fleet.FleetLaunchTemplateSpecificationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.FleetLaunchTemplateSpecificationRequestProperty) | Struct | Specifies the launch template to be used by the EC2 Fleet for configuring Amazon EC2 instances. |
| [`CfnEC2Fleet.IamInstanceProfileSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.IamInstanceProfileSpecificationProperty) | Struct |  |
| [`CfnEC2Fleet.InstanceMetadataOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.InstanceMetadataOptionsRequestProperty) | Struct |  |
| [`CfnEC2Fleet.InstanceRequirementsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.InstanceRequirementsRequestProperty) | Struct | The attributes for the instance types. |
| [`CfnEC2Fleet.Ipv6AddressRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.Ipv6AddressRequestProperty) | Struct |  |
| [`CfnEC2Fleet.MaintenanceStrategiesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.MaintenanceStrategiesProperty) | Struct | The strategies for managing your Spot Instances that are at an elevated risk of being interrupted. |
| [`CfnEC2Fleet.MemoryGiBPerVCpuRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.MemoryGiBPerVCpuRequestProperty) | Struct | The minimum and maximum amount of memory per vCPU, in GiB. |
| [`CfnEC2Fleet.MemoryMiBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.MemoryMiBRequestProperty) | Struct | The minimum and maximum amount of memory, in MiB. |
| [`CfnEC2Fleet.MultiAvailabilityZoneConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.MultiAvailabilityZoneConfigurationProperty) | Struct |  |
| [`CfnEC2Fleet.NetworkBandwidthGbpsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.NetworkBandwidthGbpsRequestProperty) | Struct | The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps). |
| [`CfnEC2Fleet.NetworkInterfaceCountRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.NetworkInterfaceCountRequestProperty) | Struct | The minimum and maximum number of network interfaces. |
| [`CfnEC2Fleet.NetworkInterfaceSpecificationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.NetworkInterfaceSpecificationRequestProperty) | Struct |  |
| [`CfnEC2Fleet.OnDemandOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.OnDemandOptionsRequestProperty) | Struct | Specifies the allocation strategy of On-Demand Instances in an EC2 Fleet. |
| [`CfnEC2Fleet.PerformanceFactorReferenceRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.PerformanceFactorReferenceRequestProperty) | Struct | Specify an instance family to use as the baseline reference for CPU performance. |
| [`CfnEC2Fleet.PlacementProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.PlacementProperty) | Struct | Describes the placement of an instance. |
| [`CfnEC2Fleet.PrivateIpAddressSpecificationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.PrivateIpAddressSpecificationRequestProperty) | Struct |  |
| [`CfnEC2Fleet.ReservedCapacityFallbackOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.ReservedCapacityFallbackOptionsRequestProperty) | Struct |  |
| [`CfnEC2Fleet.ReservedCapacityOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.ReservedCapacityOptionsRequestProperty) | Struct |  |
| [`CfnEC2Fleet.SpotOptionsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.SpotOptionsRequestProperty) | Struct | Specifies the configuration of Spot Instances for an EC2 Fleet. |
| [`CfnEC2Fleet.StandbyAvailabilityZoneProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.StandbyAvailabilityZoneProperty) | Struct |  |
| [`CfnEC2Fleet.TagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.TagSpecificationProperty) | Struct | Specifies the tags to apply to a resource when the resource is being created for an EC2 Fleet. |
| [`CfnEC2Fleet.TargetCapacitySpecificationRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.TargetCapacitySpecificationRequestProperty) | Struct | Specifies the number of units to request for an EC2 Fleet. |
| [`CfnEC2Fleet.TotalLocalStorageGBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.TotalLocalStorageGBRequestProperty) | Struct | The minimum and maximum amount of total local storage, in GB. |
| [`CfnEC2Fleet.VCpuCountRangeRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2Fleet.VCpuCountRangeRequestProperty) | Struct | The minimum and maximum number of vCPUs. |
| [`CfnEC2FleetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEC2FleetProps) | Struct | Properties for defining a `CfnEC2Fleet`. |
| [`CfnEgressOnlyInternetGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEgressOnlyInternetGatewayProps) | Struct | Properties for defining a `CfnEgressOnlyInternetGateway`. |
| [`CfnEIPAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEIPAssociationProps) | Struct | Properties for defining a `CfnEIPAssociation`. |
| [`CfnEIPProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEIPProps) | Struct | Properties for defining a `CfnEIP`. |
| [`CfnEnclaveCertificateIamRoleAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnEnclaveCertificateIamRoleAssociationProps) | Struct | Properties for defining a `CfnEnclaveCertificateIamRoleAssociation`. |
| [`CfnFlowLog.DestinationOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFlowLog.DestinationOptionsProperty) | Struct | Describes the destination options for a flow log. |
| [`CfnFlowLog.TagFieldSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFlowLog.TagFieldSpecificationProperty) | Struct |  |
| [`CfnFlowLogProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFlowLogProps) | Struct | Properties for defining a `CfnFlowLog`. |
| [`CfnFpgaImage.StorageLocationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFpgaImage.StorageLocationProperty) | Struct | Describes a storage location in Amazon S3. |
| [`CfnFpgaImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnFpgaImageProps) | Struct | Properties for defining a `CfnFpgaImage`. |
| [`CfnGatewayRouteTableAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnGatewayRouteTableAssociationProps) | Struct | Properties for defining a `CfnGatewayRouteTableAssociation`. |
| [`CfnHostProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnHostProps) | Struct | Properties for defining a `CfnHost`. |
| [`CfnInstance.AssociationParameterProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.AssociationParameterProperty) | Struct | Specifies input parameter values for an SSM document in AWS Systems Manager . |
| [`CfnInstance.BlockDeviceMappingProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.BlockDeviceMappingProperty) | Struct | Specifies a block device mapping for an instance. |
| [`CfnInstance.CpuOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.CpuOptionsProperty) | Struct | Specifies the CPU options for the instance. |
| [`CfnInstance.CreditSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.CreditSpecificationProperty) | Struct | Specifies the credit option for CPU usage of a T instance. |
| [`CfnInstance.EbsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.EbsProperty) | Struct | Specifies a block device for an EBS volume. |
| [`CfnInstance.ElasticGpuSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.ElasticGpuSpecificationProperty) | Struct | > Amazon Elastic Graphics reached end of life on January 8, 2024. |
| [`CfnInstance.ElasticInferenceAcceleratorProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.ElasticInferenceAcceleratorProperty) | Struct | > Amazon Elastic Inference is no longer available. |
| [`CfnInstance.EnaSrdSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.EnaSrdSpecificationProperty) | Struct | ENA Express uses AWS Scalable Reliable Datagram (SRD) technology to increase the maximum bandwidth used per stream and minimize tail latency of network traffic between EC2 instances. |
| [`CfnInstance.EnaSrdUdpSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.EnaSrdUdpSpecificationProperty) | Struct | ENA Express is compatible with both TCP and UDP transport protocols. |
| [`CfnInstance.EnclaveOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.EnclaveOptionsProperty) | Struct | Indicates whether the instance is enabled for AWS Nitro Enclaves. |
| [`CfnInstance.HibernationOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.HibernationOptionsProperty) | Struct | Specifies the hibernation options for the instance. |
| [`CfnInstance.InstanceIpv6AddressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.InstanceIpv6AddressProperty) | Struct | Specifies the IPv6 address for the instance. |
| [`CfnInstance.LaunchTemplateSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.LaunchTemplateSpecificationProperty) | Struct | Specifies a launch template to use when launching an Amazon EC2 instance. |
| [`CfnInstance.LicenseSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.LicenseSpecificationProperty) | Struct | Specifies the license configuration to use. |
| [`CfnInstance.MetadataOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.MetadataOptionsProperty) | Struct | Specifies the metadata options for the instance. |
| [`CfnInstance.NetworkInterfaceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.NetworkInterfaceProperty) | Struct | Specifies a network interface that is to be attached to an instance. |
| [`CfnInstance.NoDeviceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.NoDeviceProperty) | Struct |  |
| [`CfnInstance.PrivateDnsNameOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.PrivateDnsNameOptionsProperty) | Struct | The type of hostnames to assign to instances in the subnet at launch. |
| [`CfnInstance.PrivateIpAddressSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.PrivateIpAddressSpecificationProperty) | Struct | Specifies a secondary private IPv4 address for a network interface. |
| [`CfnInstance.SsmAssociationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.SsmAssociationProperty) | Struct | Specifies the SSM document and parameter values in AWS Systems Manager to associate with an instance. |
| [`CfnInstance.StateProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.StateProperty) | Struct | Describes the current state of an instance. |
| [`CfnInstance.VolumeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstance.VolumeProperty) | Struct | Specifies a volume to attach to an instance. |
| [`CfnInstanceConnectEndpoint.InstanceConnectEndpointDnsNamesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceConnectEndpoint.InstanceConnectEndpointDnsNamesProperty) | Struct | The DNS names of the endpoint. |
| [`CfnInstanceConnectEndpoint.InstanceConnectEndpointPublicDnsNamesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceConnectEndpoint.InstanceConnectEndpointPublicDnsNamesProperty) | Struct | The public DNS names of the endpoint, including IPv4-only and dualstack DNS names. |
| [`CfnInstanceConnectEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceConnectEndpointProps) | Struct | Properties for defining a `CfnInstanceConnectEndpoint`. |
| [`CfnInstanceEventWindow.TimeRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceEventWindow.TimeRangeProperty) | Struct | A time range during which an AWS-initiated maintenance event may occur. |
| [`CfnInstanceEventWindowProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceEventWindowProps) | Struct | Properties for defining a `CfnInstanceEventWindow`. |
| [`CfnInstanceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInstanceProps) | Struct | Properties for defining a `CfnInstance`. |
| [`CfnInternetGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnInternetGatewayProps) | Struct | Properties for defining a `CfnInternetGateway`. |
| [`CfnIPAM.IpamOperatingRegionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAM.IpamOperatingRegionProperty) | Struct | The operating Regions for an IPAM. |
| [`CfnIPAM.IpamOrganizationalUnitExclusionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAM.IpamOrganizationalUnitExclusionProperty) | Struct | If your IPAM is integrated with AWS Organizations, you can exclude an [organizational unit (OU)](https://docs.aws.amazon.com/organizations/latest/userguide/orgs_getting-started_concepts.html#organizationalunit) from being managed by IPAM. When you exclude an OU, IPAM will not manage the IP addresses in accounts in that OU. For more information, see [Exclude organizational units from IPAM](https://docs.aws.amazon.com/vpc/latest/ipam/exclude-ous.html) in the *Amazon Virtual Private Cloud IP Address Manager User Guide* . |
| [`CfnIPAMAllocationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMAllocationProps) | Struct | Properties for defining a `CfnIPAMAllocation`. |
| [`CfnIpamExternalResourceVerificationTokenProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpamExternalResourceVerificationTokenProps) | Struct | Properties for defining a `CfnIpamExternalResourceVerificationToken`. |
| [`CfnIpamInternetRegistryAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpamInternetRegistryAssociationProps) | Struct | Properties for defining a `CfnIpamInternetRegistryAssociation`. |
| [`CfnIPAMPool.ProvisionedCidrProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPool.ProvisionedCidrProperty) | Struct | The CIDR provisioned to the IPAM pool. |
| [`CfnIPAMPool.SourceResourceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPool.SourceResourceProperty) | Struct | The resource used to provision CIDRs to a resource planning pool. |
| [`CfnIPAMPoolCidrProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPoolCidrProps) | Struct | Properties for defining a `CfnIPAMPoolCidr`. |
| [`CfnIPAMPoolProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPoolProps) | Struct | Properties for defining a `CfnIPAMPool`. |
| [`CfnIPAMPrefixListResolver.IpamPrefixListResolverRuleConditionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolver.IpamPrefixListResolverRuleConditionProperty) | Struct | Two of the rule types allow you to add conditions to the rules. |
| [`CfnIPAMPrefixListResolver.IpamPrefixListResolverRuleProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolver.IpamPrefixListResolverRuleProperty) | Struct | CIDR selection rules define the business logic for selecting CIDRs from IPAM. |
| [`CfnIPAMPrefixListResolverProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolverProps) | Struct | Properties for defining a `CfnIPAMPrefixListResolver`. |
| [`CfnIPAMPrefixListResolverTargetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMPrefixListResolverTargetProps) | Struct | Properties for defining a `CfnIPAMPrefixListResolverTarget`. |
| [`CfnIPAMProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMProps) | Struct | Properties for defining a `CfnIPAM`. |
| [`CfnIPAMResourceDiscovery.IpamOperatingRegionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscovery.IpamOperatingRegionProperty) | Struct | The operating Regions for an IPAM. |
| [`CfnIPAMResourceDiscovery.IpamResourceDiscoveryOrganizationalUnitExclusionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscovery.IpamResourceDiscoveryOrganizationalUnitExclusionProperty) | Struct | If your IPAM is integrated with AWS Organizations, you can exclude an [organizational unit (OU)](https://docs.aws.amazon.com/organizations/latest/userguide/orgs_getting-started_concepts.html#organizationalunit) from being managed by IPAM. When you exclude an OU, IPAM will not manage the IP addresses in accounts in that OU. For more information, see [Exclude organizational units from IPAM](https://docs.aws.amazon.com/vpc/latest/ipam/exclude-ous.html) in the *Amazon Virtual Private Cloud IP Address Manager User Guide* . |
| [`CfnIPAMResourceDiscoveryAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscoveryAssociationProps) | Struct | Properties for defining a `CfnIPAMResourceDiscoveryAssociation`. |
| [`CfnIPAMResourceDiscoveryProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMResourceDiscoveryProps) | Struct | Properties for defining a `CfnIPAMResourceDiscovery`. |
| [`CfnIPAMScope.IpamScopeExternalAuthorityConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMScope.IpamScopeExternalAuthorityConfigurationProperty) | Struct | The configuration that links an Amazon VPC IPAM scope to an external authority system. |
| [`CfnIPAMScopeProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPAMScopeProps) | Struct | Properties for defining a `CfnIPAMScope`. |
| [`CfnIpPoolRouteTableAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIpPoolRouteTableAssociationProps) | Struct | Properties for defining a `CfnIpPoolRouteTableAssociation`. |
| [`CfnIPv4PoolProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnIPv4PoolProps) | Struct | Properties for defining a `CfnIPv4Pool`. |
| [`CfnKeyPairProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnKeyPairProps) | Struct | Properties for defining a `CfnKeyPair`. |
| [`CfnLaunchTemplate.AcceleratorCountProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.AcceleratorCountProperty) | Struct | The minimum and maximum number of accelerators (GPUs, FPGAs, or AWS Inferentia chips) on an instance. |
| [`CfnLaunchTemplate.AcceleratorTotalMemoryMiBProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.AcceleratorTotalMemoryMiBProperty) | Struct | The minimum and maximum amount of total accelerator memory, in MiB. |
| [`CfnLaunchTemplate.BaselineEbsBandwidthMbpsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.BaselineEbsBandwidthMbpsProperty) | Struct | The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. |
| [`CfnLaunchTemplate.BaselinePerformanceFactorsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.BaselinePerformanceFactorsProperty) | Struct | The baseline performance to consider, using an instance family as a baseline reference. |
| [`CfnLaunchTemplate.BlockDeviceMappingProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.BlockDeviceMappingProperty) | Struct | Specifies a block device mapping for a launch template. |
| [`CfnLaunchTemplate.CapacityReservationSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.CapacityReservationSpecificationProperty) | Struct | Specifies an instance's Capacity Reservation targeting option. You can specify only one option at a time. |
| [`CfnLaunchTemplate.CapacityReservationTargetProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.CapacityReservationTargetProperty) | Struct | Specifies a target Capacity Reservation. |
| [`CfnLaunchTemplate.ConnectionTrackingSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.ConnectionTrackingSpecificationProperty) | Struct | A security group connection tracking specification that enables you to set the idle timeout for connection tracking on an Elastic network interface. |
| [`CfnLaunchTemplate.CpuOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.CpuOptionsProperty) | Struct | Specifies the CPU options for an instance. |
| [`CfnLaunchTemplate.CpuProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.CpuProperty) | Struct | Specifies the CPU performance to consider when using an instance family as the baseline reference. |
| [`CfnLaunchTemplate.CreditSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.CreditSpecificationProperty) | Struct | Specifies the credit option for CPU usage of a T2, T3, or T3a instance. |
| [`CfnLaunchTemplate.EbsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.EbsProperty) | Struct | Parameters for a block device for an EBS volume in an Amazon EC2 launch template. |
| [`CfnLaunchTemplate.ElasticGpuSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.ElasticGpuSpecificationProperty) | Struct |  |
| [`CfnLaunchTemplate.EnaSrdSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.EnaSrdSpecificationProperty) | Struct | ENA Express uses AWS Scalable Reliable Datagram (SRD) technology to increase the maximum bandwidth used per stream and minimize tail latency of network traffic between EC2 instances. |
| [`CfnLaunchTemplate.EnaSrdUdpSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.EnaSrdUdpSpecificationProperty) | Struct | ENA Express is compatible with both TCP and UDP transport protocols. |
| [`CfnLaunchTemplate.EnclaveOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.EnclaveOptionsProperty) | Struct | Indicates whether the instance is enabled for AWS Nitro Enclaves. |
| [`CfnLaunchTemplate.HibernationOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.HibernationOptionsProperty) | Struct | Specifies whether your instance is configured for hibernation. |
| [`CfnLaunchTemplate.IamInstanceProfileProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.IamInstanceProfileProperty) | Struct | Specifies an IAM instance profile, which is a container for an IAM role for your instance. |
| [`CfnLaunchTemplate.InstanceMarketOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.InstanceMarketOptionsProperty) | Struct | Specifies the market (purchasing) option for an instance. |
| [`CfnLaunchTemplate.InstanceRequirementsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.InstanceRequirementsProperty) | Struct | The attributes for the instance types. |
| [`CfnLaunchTemplate.Ipv4PrefixSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.Ipv4PrefixSpecificationProperty) | Struct | Specifies an IPv4 prefix for a network interface. |
| [`CfnLaunchTemplate.Ipv6AddProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.Ipv6AddProperty) | Struct | Specifies an IPv6 address in an Amazon EC2 launch template. |
| [`CfnLaunchTemplate.Ipv6PrefixSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.Ipv6PrefixSpecificationProperty) | Struct | Specifies an IPv6 prefix for a network interface. |
| [`CfnLaunchTemplate.LaunchTemplateDataProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.LaunchTemplateDataProperty) | Struct | The information to include in the launch template. |
| [`CfnLaunchTemplate.LaunchTemplateElasticInferenceAcceleratorProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.LaunchTemplateElasticInferenceAcceleratorProperty) | Struct |  |
| [`CfnLaunchTemplate.LaunchTemplateTagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.LaunchTemplateTagSpecificationProperty) | Struct | Specifies the tags to apply to the launch template during creation. |
| [`CfnLaunchTemplate.LicenseSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.LicenseSpecificationProperty) | Struct | Specifies a license configuration for an instance. |
| [`CfnLaunchTemplate.MaintenanceOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.MaintenanceOptionsProperty) | Struct | The maintenance options of your instance. |
| [`CfnLaunchTemplate.MemoryGiBPerVCpuProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.MemoryGiBPerVCpuProperty) | Struct | The minimum and maximum amount of memory per vCPU, in GiB. |
| [`CfnLaunchTemplate.MemoryMiBProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.MemoryMiBProperty) | Struct | The minimum and maximum amount of memory, in MiB. |
| [`CfnLaunchTemplate.MetadataOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.MetadataOptionsProperty) | Struct | The metadata options for the instance. |
| [`CfnLaunchTemplate.MonitoringProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.MonitoringProperty) | Struct | Specifies whether detailed monitoring is enabled for an instance. |
| [`CfnLaunchTemplate.NetworkBandwidthGbpsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.NetworkBandwidthGbpsProperty) | Struct | The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps). |
| [`CfnLaunchTemplate.NetworkInterfaceCountProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.NetworkInterfaceCountProperty) | Struct | The minimum and maximum number of network interfaces. |
| [`CfnLaunchTemplate.NetworkInterfaceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.NetworkInterfaceProperty) | Struct | Specifies the parameters for a network interface. |
| [`CfnLaunchTemplate.NetworkPerformanceOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.NetworkPerformanceOptionsProperty) | Struct | Contains settings for the network performance options for the instance. |
| [`CfnLaunchTemplate.PlacementProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.PlacementProperty) | Struct | Specifies the placement of an instance. |
| [`CfnLaunchTemplate.PrivateDnsNameOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.PrivateDnsNameOptionsProperty) | Struct | The hostname type for EC2 instances launched into this subnet and how DNS A and AAAA record queries should be handled. |
| [`CfnLaunchTemplate.PrivateIpAddProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.PrivateIpAddProperty) | Struct | Specifies a secondary private IPv4 address for a network interface. |
| [`CfnLaunchTemplate.ReferenceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.ReferenceProperty) | Struct | Specifies an instance family to use as the baseline reference for CPU performance. |
| [`CfnLaunchTemplate.SpotOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.SpotOptionsProperty) | Struct | Specifies options for Spot Instances. |
| [`CfnLaunchTemplate.TagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.TagSpecificationProperty) | Struct | Specifies the tags to apply to resources that are created during instance launch. |
| [`CfnLaunchTemplate.TotalLocalStorageGBProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.TotalLocalStorageGBProperty) | Struct | The minimum and maximum amount of total local storage, in GB. |
| [`CfnLaunchTemplate.VCpuCountProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplate.VCpuCountProperty) | Struct | The minimum and maximum number of vCPUs. |
| [`CfnLaunchTemplateProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLaunchTemplateProps) | Struct | Properties for defining a `CfnLaunchTemplate`. |
| [`CfnLocalGatewayRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteProps) | Struct | Properties for defining a `CfnLocalGatewayRoute`. |
| [`CfnLocalGatewayRouteTableProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTableProps) | Struct | Properties for defining a `CfnLocalGatewayRouteTable`. |
| [`CfnLocalGatewayRouteTableVirtualInterfaceGroupAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTableVirtualInterfaceGroupAssociationProps) | Struct | Properties for defining a `CfnLocalGatewayRouteTableVirtualInterfaceGroupAssociation`. |
| [`CfnLocalGatewayRouteTableVPCAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayRouteTableVPCAssociationProps) | Struct | Properties for defining a `CfnLocalGatewayRouteTableVPCAssociation`. |
| [`CfnLocalGatewayVirtualInterfaceGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayVirtualInterfaceGroupProps) | Struct | Properties for defining a `CfnLocalGatewayVirtualInterfaceGroup`. |
| [`CfnLocalGatewayVirtualInterfaceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnLocalGatewayVirtualInterfaceProps) | Struct | Properties for defining a `CfnLocalGatewayVirtualInterface`. |
| [`CfnNatGateway.AvailabilityZoneAddressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNatGateway.AvailabilityZoneAddressProperty) | Struct | For regional NAT gateways only: The configuration specifying which Elastic IP address (EIP) to use for handling outbound NAT traffic from a specific Availability Zone. |
| [`CfnNatGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNatGatewayProps) | Struct | Properties for defining a `CfnNatGateway`. |
| [`CfnNetworkAclEntry.IcmpProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAclEntry.IcmpProperty) | Struct | Describes the ICMP type and code. |
| [`CfnNetworkAclEntry.PortRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAclEntry.PortRangeProperty) | Struct | Describes a range of ports. |
| [`CfnNetworkAclEntryProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAclEntryProps) | Struct | Properties for defining a `CfnNetworkAclEntry`. |
| [`CfnNetworkAclProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkAclProps) | Struct | Properties for defining a `CfnNetworkAcl`. |
| [`CfnNetworkInsightsAccessScope.AccessScopePathRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope.AccessScopePathRequestProperty) | Struct | Describes a path. |
| [`CfnNetworkInsightsAccessScope.PacketHeaderStatementRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope.PacketHeaderStatementRequestProperty) | Struct | Describes a packet header statement. |
| [`CfnNetworkInsightsAccessScope.PathStatementRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope.PathStatementRequestProperty) | Struct | Describes a path statement. |
| [`CfnNetworkInsightsAccessScope.ResourceStatementRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope.ResourceStatementRequestProperty) | Struct | Describes a resource statement. |
| [`CfnNetworkInsightsAccessScope.ThroughResourcesStatementRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScope.ThroughResourcesStatementRequestProperty) | Struct | Describes a through resource statement. |
| [`CfnNetworkInsightsAccessScopeAnalysisProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScopeAnalysisProps) | Struct | Properties for defining a `CfnNetworkInsightsAccessScopeAnalysis`. |
| [`CfnNetworkInsightsAccessScopeProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAccessScopeProps) | Struct | Properties for defining a `CfnNetworkInsightsAccessScope`. |
| [`CfnNetworkInsightsAnalysis.AdditionalDetailProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AdditionalDetailProperty) | Struct | Describes an additional detail for a path analysis. |
| [`CfnNetworkInsightsAnalysis.AlternatePathHintProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AlternatePathHintProperty) | Struct | Describes an potential intermediate component of a feasible path. |
| [`CfnNetworkInsightsAnalysis.AnalysisAclRuleProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisAclRuleProperty) | Struct | Describes a network access control (ACL) rule. |
| [`CfnNetworkInsightsAnalysis.AnalysisComponentProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisComponentProperty) | Struct | Describes a path component. |
| [`CfnNetworkInsightsAnalysis.AnalysisLoadBalancerListenerProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisLoadBalancerListenerProperty) | Struct | Describes a load balancer listener. |
| [`CfnNetworkInsightsAnalysis.AnalysisLoadBalancerTargetProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisLoadBalancerTargetProperty) | Struct | Describes a load balancer target. |
| [`CfnNetworkInsightsAnalysis.AnalysisPacketHeaderProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisPacketHeaderProperty) | Struct | Describes a header. |
| [`CfnNetworkInsightsAnalysis.AnalysisRouteTableRouteProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisRouteTableRouteProperty) | Struct | Describes a route table route. |
| [`CfnNetworkInsightsAnalysis.AnalysisSecurityGroupRuleProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisSecurityGroupRuleProperty) | Struct | Describes a security group rule. |
| [`CfnNetworkInsightsAnalysis.AnalysisTransitGatewayPolicyTableEntryProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.AnalysisTransitGatewayPolicyTableEntryProperty) | Struct |  |
| [`CfnNetworkInsightsAnalysis.ExplanationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.ExplanationProperty) | Struct | Describes an explanation code for an unreachable path. |
| [`CfnNetworkInsightsAnalysis.PathComponentProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.PathComponentProperty) | Struct | Describes a path component. |
| [`CfnNetworkInsightsAnalysis.PortRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.PortRangeProperty) | Struct | Describes a range of ports. |
| [`CfnNetworkInsightsAnalysis.TransitGatewayRouteTableRouteProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysis.TransitGatewayRouteTableRouteProperty) | Struct | Describes a route in a transit gateway route table. |
| [`CfnNetworkInsightsAnalysisProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsAnalysisProps) | Struct | Properties for defining a `CfnNetworkInsightsAnalysis`. |
| [`CfnNetworkInsightsPath.FilterPortRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsPath.FilterPortRangeProperty) | Struct | Describes a port range. |
| [`CfnNetworkInsightsPath.PathFilterProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsPath.PathFilterProperty) | Struct | Describes a set of filters for a path analysis. |
| [`CfnNetworkInsightsPathProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInsightsPathProps) | Struct | Properties for defining a `CfnNetworkInsightsPath`. |
| [`CfnNetworkInterface.ConnectionTrackingSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.ConnectionTrackingSpecificationProperty) | Struct | Configurable options for connection tracking on a network interface. |
| [`CfnNetworkInterface.InstanceIpv6AddressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.InstanceIpv6AddressProperty) | Struct | Describes the IPv6 addresses to associate with the network interface. |
| [`CfnNetworkInterface.Ipv4PrefixSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.Ipv4PrefixSpecificationProperty) | Struct | Describes an IPv4 prefix. |
| [`CfnNetworkInterface.Ipv6PrefixSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.Ipv6PrefixSpecificationProperty) | Struct | Describes the IPv6 prefix. |
| [`CfnNetworkInterface.PrivateIpAddressSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.PrivateIpAddressSpecificationProperty) | Struct | Describes a secondary private IPv4 address for a network interface. |
| [`CfnNetworkInterface.PublicIpDnsNameOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterface.PublicIpDnsNameOptionsProperty) | Struct | Public hostname type options. |
| [`CfnNetworkInterfaceAttachment.EnaSrdSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfaceAttachment.EnaSrdSpecificationProperty) | Struct | ENA Express uses AWS Scalable Reliable Datagram (SRD) technology to increase the maximum bandwidth used per stream and minimize tail latency of network traffic between EC2 instances. |
| [`CfnNetworkInterfaceAttachment.EnaSrdUdpSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfaceAttachment.EnaSrdUdpSpecificationProperty) | Struct | ENA Express is compatible with both TCP and UDP transport protocols. |
| [`CfnNetworkInterfaceAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfaceAttachmentProps) | Struct | Properties for defining a `CfnNetworkInterfaceAttachment`. |
| [`CfnNetworkInterfacePermissionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfacePermissionProps) | Struct | Properties for defining a `CfnNetworkInterfacePermission`. |
| [`CfnNetworkInterfaceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkInterfaceProps) | Struct | Properties for defining a `CfnNetworkInterface`. |
| [`CfnNetworkPerformanceMetricSubscriptionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnNetworkPerformanceMetricSubscriptionProps) | Struct | Properties for defining a `CfnNetworkPerformanceMetricSubscription`. |
| [`CfnPlacementGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnPlacementGroupProps) | Struct | Properties for defining a `CfnPlacementGroup`. |
| [`CfnPrefixList.EntryProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnPrefixList.EntryProperty) | Struct | An entry for a prefix list. |
| [`CfnPrefixListProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnPrefixListProps) | Struct | Properties for defining a `CfnPrefixList`. |
| [`CfnRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteProps) | Struct | Properties for defining a `CfnRoute`. |
| [`CfnRouteServerAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerAssociationProps) | Struct | Properties for defining a `CfnRouteServerAssociation`. |
| [`CfnRouteServerEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerEndpointProps) | Struct | Properties for defining a `CfnRouteServerEndpoint`. |
| [`CfnRouteServerPeer.BgpOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerPeer.BgpOptionsProperty) | Struct | The BGP configuration options for this peer, including ASN (Autonomous System Number) and BFD (Bidrectional Forwarding Detection) settings. |
| [`CfnRouteServerPeerProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerPeerProps) | Struct | Properties for defining a `CfnRouteServerPeer`. |
| [`CfnRouteServerPropagationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerPropagationProps) | Struct | Properties for defining a `CfnRouteServerPropagation`. |
| [`CfnRouteServerProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteServerProps) | Struct | Properties for defining a `CfnRouteServer`. |
| [`CfnRouteTableProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnRouteTableProps) | Struct | Properties for defining a `CfnRouteTable`. |
| [`CfnSecondaryNetwork.Ipv4CidrBlockAssociationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecondaryNetwork.Ipv4CidrBlockAssociationProperty) | Struct |  |
| [`CfnSecondaryNetworkProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecondaryNetworkProps) | Struct | Properties for defining a `CfnSecondaryNetwork`. |
| [`CfnSecurityGroup.EgressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroup.EgressProperty) | Struct | Adds the specified outbound (egress) rule to a security group. |
| [`CfnSecurityGroup.IngressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroup.IngressProperty) | Struct | Adds an inbound (ingress) rule to a security group. |
| [`CfnSecurityGroupEgressProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupEgressProps) | Struct | Properties for defining a `CfnSecurityGroupEgress`. |
| [`CfnSecurityGroupIngressProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupIngressProps) | Struct | Properties for defining a `CfnSecurityGroupIngress`. |
| [`CfnSecurityGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupProps) | Struct | Properties for defining a `CfnSecurityGroup`. |
| [`CfnSecurityGroupVpcAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSecurityGroupVpcAssociationProps) | Struct | Properties for defining a `CfnSecurityGroupVpcAssociation`. |
| [`CfnSnapshotBlockPublicAccessProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSnapshotBlockPublicAccessProps) | Struct | Properties for defining a `CfnSnapshotBlockPublicAccess`. |
| [`CfnSpotFleet.AcceleratorCountRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.AcceleratorCountRequestProperty) | Struct | The minimum and maximum number of accelerators (GPUs, FPGAs, or AWS Inferentia chips) on an instance. |
| [`CfnSpotFleet.AcceleratorTotalMemoryMiBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.AcceleratorTotalMemoryMiBRequestProperty) | Struct | The minimum and maximum amount of total accelerator memory, in MiB. |
| [`CfnSpotFleet.BaselineEbsBandwidthMbpsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.BaselineEbsBandwidthMbpsRequestProperty) | Struct | The minimum and maximum baseline bandwidth to Amazon EBS, in Mbps. |
| [`CfnSpotFleet.BaselinePerformanceFactorsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.BaselinePerformanceFactorsRequestProperty) | Struct | The baseline performance to consider, using an instance family as a baseline reference. |
| [`CfnSpotFleet.BlockDeviceMappingProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.BlockDeviceMappingProperty) | Struct | Specifies a block device mapping. |
| [`CfnSpotFleet.ClassicLoadBalancerProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.ClassicLoadBalancerProperty) | Struct | Specifies a Classic Load Balancer. |
| [`CfnSpotFleet.ClassicLoadBalancersConfigProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.ClassicLoadBalancersConfigProperty) | Struct | Specifies the Classic Load Balancers to attach to a Spot Fleet. |
| [`CfnSpotFleet.CpuPerformanceFactorRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.CpuPerformanceFactorRequestProperty) | Struct | The CPU performance to consider, using an instance family as the baseline reference. |
| [`CfnSpotFleet.EbsBlockDeviceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.EbsBlockDeviceProperty) | Struct | Describes a block device for an EBS volume. |
| [`CfnSpotFleet.FleetLaunchTemplateSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.FleetLaunchTemplateSpecificationProperty) | Struct | Specifies the launch template to be used by the Spot Fleet request for configuring Amazon EC2 instances. |
| [`CfnSpotFleet.GroupIdentifierProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.GroupIdentifierProperty) | Struct | Describes a security group. |
| [`CfnSpotFleet.IamInstanceProfileSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.IamInstanceProfileSpecificationProperty) | Struct | Describes an IAM instance profile. |
| [`CfnSpotFleet.InstanceIpv6AddressProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.InstanceIpv6AddressProperty) | Struct | Describes an IPv6 address. |
| [`CfnSpotFleet.InstanceNetworkInterfaceSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.InstanceNetworkInterfaceSpecificationProperty) | Struct | Describes a network interface. |
| [`CfnSpotFleet.InstanceRequirementsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.InstanceRequirementsRequestProperty) | Struct | The attributes for the instance types. |
| [`CfnSpotFleet.LaunchTemplateConfigProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.LaunchTemplateConfigProperty) | Struct | Specifies a launch template and overrides. |
| [`CfnSpotFleet.LaunchTemplateOverridesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.LaunchTemplateOverridesProperty) | Struct | Specifies overrides for a launch template. |
| [`CfnSpotFleet.LoadBalancersConfigProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.LoadBalancersConfigProperty) | Struct | Specifies the Classic Load Balancers and target groups to attach to a Spot Fleet request. |
| [`CfnSpotFleet.MemoryGiBPerVCpuRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.MemoryGiBPerVCpuRequestProperty) | Struct | The minimum and maximum amount of memory per vCPU, in GiB. |
| [`CfnSpotFleet.MemoryMiBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.MemoryMiBRequestProperty) | Struct | The minimum and maximum amount of memory, in MiB. |
| [`CfnSpotFleet.NetworkBandwidthGbpsRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.NetworkBandwidthGbpsRequestProperty) | Struct | The minimum and maximum amount of baseline network bandwidth, in gigabits per second (Gbps). |
| [`CfnSpotFleet.NetworkInterfaceCountRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.NetworkInterfaceCountRequestProperty) | Struct | The minimum and maximum number of network interfaces. |
| [`CfnSpotFleet.PerformanceFactorReferenceRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.PerformanceFactorReferenceRequestProperty) | Struct | Specify an instance family to use as the baseline reference for CPU performance. |
| [`CfnSpotFleet.PrivateIpAddressSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.PrivateIpAddressSpecificationProperty) | Struct | Describes a secondary private IPv4 address for a network interface. |
| [`CfnSpotFleet.SpotCapacityRebalanceProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotCapacityRebalanceProperty) | Struct | The Spot Instance replacement strategy to use when Amazon EC2 emits a signal that your Spot Instance is at an elevated risk of being interrupted. |
| [`CfnSpotFleet.SpotFleetLaunchSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotFleetLaunchSpecificationProperty) | Struct | Specifies the launch specification for one or more Spot Instances. |
| [`CfnSpotFleet.SpotFleetMonitoringProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotFleetMonitoringProperty) | Struct | Describes whether monitoring is enabled. |
| [`CfnSpotFleet.SpotFleetRequestConfigDataProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotFleetRequestConfigDataProperty) | Struct | Specifies the configuration of a Spot Fleet request. |
| [`CfnSpotFleet.SpotFleetTagSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotFleetTagSpecificationProperty) | Struct | The tags for a Spot Fleet resource. |
| [`CfnSpotFleet.SpotMaintenanceStrategiesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotMaintenanceStrategiesProperty) | Struct | The strategies for managing your Spot Instances that are at an elevated risk of being interrupted. |
| [`CfnSpotFleet.SpotPlacementProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.SpotPlacementProperty) | Struct | Describes Spot Instance placement. |
| [`CfnSpotFleet.TargetGroupProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.TargetGroupProperty) | Struct | Describes a load balancer target group. |
| [`CfnSpotFleet.TargetGroupsConfigProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.TargetGroupsConfigProperty) | Struct | Describes the target groups to attach to a Spot Fleet. |
| [`CfnSpotFleet.TotalLocalStorageGBRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.TotalLocalStorageGBRequestProperty) | Struct | The minimum and maximum amount of total local storage, in GB. |
| [`CfnSpotFleet.VCpuCountRangeRequestProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleet.VCpuCountRangeRequestProperty) | Struct | The minimum and maximum number of vCPUs. |
| [`CfnSpotFleetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSpotFleetProps) | Struct | Properties for defining a `CfnSpotFleet`. |
| [`CfnSqlHaStandbyDetectedInstanceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSqlHaStandbyDetectedInstanceProps) | Struct | Properties for defining a `CfnSqlHaStandbyDetectedInstance`. |
| [`CfnSubnet.BlockPublicAccessStatesProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnet.BlockPublicAccessStatesProperty) | Struct | Specifies the state of VPC Block Public Access (BPA). |
| [`CfnSubnet.PrivateDnsNameOptionsOnLaunchProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnet.PrivateDnsNameOptionsOnLaunchProperty) | Struct | Specifies the options for instance hostnames. |
| [`CfnSubnetCidrBlockProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetCidrBlockProps) | Struct | Properties for defining a `CfnSubnetCidrBlock`. |
| [`CfnSubnetCidrReservationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetCidrReservationProps) | Struct | Properties for defining a `CfnSubnetCidrReservation`. |
| [`CfnSubnetNetworkAclAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetNetworkAclAssociationProps) | Struct | Properties for defining a `CfnSubnetNetworkAclAssociation`. |
| [`CfnSubnetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetProps) | Struct | Properties for defining a `CfnSubnet`. |
| [`CfnSubnetRouteTableAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnSubnetRouteTableAssociationProps) | Struct | Properties for defining a `CfnSubnetRouteTableAssociation`. |
| [`CfnTrafficMirrorFilterProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorFilterProps) | Struct | Properties for defining a `CfnTrafficMirrorFilter`. |
| [`CfnTrafficMirrorFilterRule.TrafficMirrorPortRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorFilterRule.TrafficMirrorPortRangeProperty) | Struct | Describes the Traffic Mirror port range. |
| [`CfnTrafficMirrorFilterRuleProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorFilterRuleProps) | Struct | Properties for defining a `CfnTrafficMirrorFilterRule`. |
| [`CfnTrafficMirrorSessionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorSessionProps) | Struct | Properties for defining a `CfnTrafficMirrorSession`. |
| [`CfnTrafficMirrorTargetProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTrafficMirrorTargetProps) | Struct | Properties for defining a `CfnTrafficMirrorTarget`. |
| [`CfnTransitGatewayAttachment.OptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayAttachment.OptionsProperty) | Struct | Describes the VPC attachment options. |
| [`CfnTransitGatewayAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayAttachmentProps) | Struct | Properties for defining a `CfnTransitGatewayAttachment`. |
| [`CfnTransitGatewayConnect.TransitGatewayConnectOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnect.TransitGatewayConnectOptionsProperty) | Struct | Describes the Connect attachment options. |
| [`CfnTransitGatewayConnectPeer.TransitGatewayAttachmentBgpConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnectPeer.TransitGatewayAttachmentBgpConfigurationProperty) | Struct | The BGP configuration information. |
| [`CfnTransitGatewayConnectPeer.TransitGatewayConnectPeerConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnectPeer.TransitGatewayConnectPeerConfigurationProperty) | Struct | Describes the Connect peer details. |
| [`CfnTransitGatewayConnectPeerProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnectPeerProps) | Struct | Properties for defining a `CfnTransitGatewayConnectPeer`. |
| [`CfnTransitGatewayConnectProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayConnectProps) | Struct | Properties for defining a `CfnTransitGatewayConnect`. |
| [`CfnTransitGatewayMeteringPolicyEntryProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMeteringPolicyEntryProps) | Struct | Properties for defining a `CfnTransitGatewayMeteringPolicyEntry`. |
| [`CfnTransitGatewayMeteringPolicyProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMeteringPolicyProps) | Struct | Properties for defining a `CfnTransitGatewayMeteringPolicy`. |
| [`CfnTransitGatewayMulticastDomain.OptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastDomain.OptionsProperty) | Struct | The options for the transit gateway multicast domain. |
| [`CfnTransitGatewayMulticastDomainAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastDomainAssociationProps) | Struct | Properties for defining a `CfnTransitGatewayMulticastDomainAssociation`. |
| [`CfnTransitGatewayMulticastDomainProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastDomainProps) | Struct | Properties for defining a `CfnTransitGatewayMulticastDomain`. |
| [`CfnTransitGatewayMulticastGroupMemberProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastGroupMemberProps) | Struct | Properties for defining a `CfnTransitGatewayMulticastGroupMember`. |
| [`CfnTransitGatewayMulticastGroupSourceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayMulticastGroupSourceProps) | Struct | Properties for defining a `CfnTransitGatewayMulticastGroupSource`. |
| [`CfnTransitGatewayPeeringAttachment.PeeringAttachmentStatusProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPeeringAttachment.PeeringAttachmentStatusProperty) | Struct | The status of the transit gateway peering attachment. |
| [`CfnTransitGatewayPeeringAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPeeringAttachmentProps) | Struct | Properties for defining a `CfnTransitGatewayPeeringAttachment`. |
| [`CfnTransitGatewayPolicyTableAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableAssociationProps) | Struct | Properties for defining a `CfnTransitGatewayPolicyTableAssociation`. |
| [`CfnTransitGatewayPolicyTableEntry.TransitGatewayPolicyRuleProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableEntry.TransitGatewayPolicyRuleProperty) | Struct |  |
| [`CfnTransitGatewayPolicyTableEntryProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableEntryProps) | Struct | Properties for defining a `CfnTransitGatewayPolicyTableEntry`. |
| [`CfnTransitGatewayPolicyTableProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayPolicyTableProps) | Struct | Properties for defining a `CfnTransitGatewayPolicyTable`. |
| [`CfnTransitGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayProps) | Struct | Properties for defining a `CfnTransitGateway`. |
| [`CfnTransitGatewayRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteProps) | Struct | Properties for defining a `CfnTransitGatewayRoute`. |
| [`CfnTransitGatewayRouteTableAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTableAssociationProps) | Struct | Properties for defining a `CfnTransitGatewayRouteTableAssociation`. |
| [`CfnTransitGatewayRouteTablePropagationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTablePropagationProps) | Struct | Properties for defining a `CfnTransitGatewayRouteTablePropagation`. |
| [`CfnTransitGatewayRouteTableProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayRouteTableProps) | Struct | Properties for defining a `CfnTransitGatewayRouteTable`. |
| [`CfnTransitGatewayVpcAttachment.OptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayVpcAttachment.OptionsProperty) | Struct | Describes the VPC attachment options. |
| [`CfnTransitGatewayVpcAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnTransitGatewayVpcAttachmentProps) | Struct | Properties for defining a `CfnTransitGatewayVpcAttachment`. |
| [`CfnVerifiedAccessEndpoint.CidrOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.CidrOptionsProperty) | Struct | Describes the CIDR options for a Verified Access endpoint. |
| [`CfnVerifiedAccessEndpoint.LoadBalancerOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.LoadBalancerOptionsProperty) | Struct | Describes the load balancer options when creating an AWS Verified Access endpoint using the `load-balancer` type. |
| [`CfnVerifiedAccessEndpoint.NetworkInterfaceOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.NetworkInterfaceOptionsProperty) | Struct | Describes the network interface options when creating an AWS Verified Access endpoint using the `network-interface` type. |
| [`CfnVerifiedAccessEndpoint.PortRangeProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.PortRangeProperty) | Struct | Describes the port range for a Verified Access endpoint. |
| [`CfnVerifiedAccessEndpoint.RdsOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.RdsOptionsProperty) | Struct | Describes the RDS options for a Verified Access endpoint. |
| [`CfnVerifiedAccessEndpoint.SseSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpoint.SseSpecificationProperty) | Struct | AWS Verified Access provides server side encryption by default to data at rest using AWS -owned KMS keys. |
| [`CfnVerifiedAccessEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessEndpointProps) | Struct | Properties for defining a `CfnVerifiedAccessEndpoint`. |
| [`CfnVerifiedAccessGroup.SseSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessGroup.SseSpecificationProperty) | Struct | AWS Verified Access provides server side encryption by default to data at rest using AWS -owned KMS keys. |
| [`CfnVerifiedAccessGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessGroupProps) | Struct | Properties for defining a `CfnVerifiedAccessGroup`. |
| [`CfnVerifiedAccessInstance.CloudWatchLogsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance.CloudWatchLogsProperty) | Struct | Options for CloudWatch Logs as a logging destination. |
| [`CfnVerifiedAccessInstance.KinesisDataFirehoseProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance.KinesisDataFirehoseProperty) | Struct | Options for Kinesis as a logging destination. |
| [`CfnVerifiedAccessInstance.S3Property`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance.S3Property) | Struct | Options for Amazon S3 as a logging destination. |
| [`CfnVerifiedAccessInstance.VerifiedAccessLogsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance.VerifiedAccessLogsProperty) | Struct | Describes the options for Verified Access logs. |
| [`CfnVerifiedAccessInstance.VerifiedAccessTrustProviderProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstance.VerifiedAccessTrustProviderProperty) | Struct | A trust provider is a third-party entity that creates, maintains, and manages identity information for users and devices. |
| [`CfnVerifiedAccessInstanceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessInstanceProps) | Struct | Properties for defining a `CfnVerifiedAccessInstance`. |
| [`CfnVerifiedAccessTrustProvider.DeviceOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProvider.DeviceOptionsProperty) | Struct | Describes the options for an AWS Verified Access device-identity based trust provider. |
| [`CfnVerifiedAccessTrustProvider.NativeApplicationOidcOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProvider.NativeApplicationOidcOptionsProperty) | Struct | Describes the OpenID Connect (OIDC) options. |
| [`CfnVerifiedAccessTrustProvider.OidcOptionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProvider.OidcOptionsProperty) | Struct | Describes the options for an OpenID Connect-compatible user-identity trust provider. |
| [`CfnVerifiedAccessTrustProvider.SseSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProvider.SseSpecificationProperty) | Struct | AWS Verified Access provides server side encryption by default to data at rest using AWS -owned KMS keys. |
| [`CfnVerifiedAccessTrustProviderProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVerifiedAccessTrustProviderProps) | Struct | Properties for defining a `CfnVerifiedAccessTrustProvider`. |
| [`CfnVolumeAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVolumeAttachmentProps) | Struct | Properties for defining a `CfnVolumeAttachment`. |
| [`CfnVolumeProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVolumeProps) | Struct | Properties for defining a `CfnVolume`. |
| [`CfnVPC.VpcEncryptionControlExclusionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPC.VpcEncryptionControlExclusionProperty) | Struct | Describes an exclusion configuration for VPC Encryption Control. |
| [`CfnVPC.VpcEncryptionControlExclusionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPC.VpcEncryptionControlExclusionsProperty) | Struct | Describes the exclusion configurations for various resource types in VPC Encryption Control. |
| [`CfnVPC.VpcEncryptionControlProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPC.VpcEncryptionControlProperty) | Struct | Describes the configuration and state of VPC encryption controls. |
| [`CfnVPCBlockPublicAccessExclusionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCBlockPublicAccessExclusionProps) | Struct | Properties for defining a `CfnVPCBlockPublicAccessExclusion`. |
| [`CfnVPCBlockPublicAccessOptionsProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCBlockPublicAccessOptionsProps) | Struct | Properties for defining a `CfnVPCBlockPublicAccessOptions`. |
| [`CfnVPCCidrBlockProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCCidrBlockProps) | Struct | Properties for defining a `CfnVPCCidrBlock`. |
| [`CfnVPCDHCPOptionsAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCDHCPOptionsAssociationProps) | Struct | Properties for defining a `CfnVPCDHCPOptionsAssociation`. |
| [`CfnVPCEncryptionControl.ResourceExclusionsProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEncryptionControl.ResourceExclusionsProperty) | Struct | Information about resource exclusions for the VPC Encryption Control configuration. |
| [`CfnVPCEncryptionControl.VpcEncryptionControlExclusionProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEncryptionControl.VpcEncryptionControlExclusionProperty) | Struct | Describes an exclusion configuration for VPC Encryption Control. |
| [`CfnVPCEncryptionControlProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEncryptionControlProps) | Struct | Properties for defining a `CfnVPCEncryptionControl`. |
| [`CfnVPCEndpoint.DnsOptionsSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpoint.DnsOptionsSpecificationProperty) | Struct | Describes the DNS options for an endpoint. |
| [`CfnVPCEndpointConnectionNotificationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointConnectionNotificationProps) | Struct | Properties for defining a `CfnVPCEndpointConnectionNotification`. |
| [`CfnVPCEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointProps) | Struct | Properties for defining a `CfnVPCEndpoint`. |
| [`CfnVPCEndpointService.PrivateDnsNameConfigurationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointService.PrivateDnsNameConfigurationProperty) | Struct |  |
| [`CfnVPCEndpointServicePermissionsProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointServicePermissionsProps) | Struct | Properties for defining a `CfnVPCEndpointServicePermissions`. |
| [`CfnVPCEndpointServiceProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCEndpointServiceProps) | Struct | Properties for defining a `CfnVPCEndpointService`. |
| [`CfnVPCGatewayAttachmentProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCGatewayAttachmentProps) | Struct | Properties for defining a `CfnVPCGatewayAttachment`. |
| [`CfnVPCPeeringConnectionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCPeeringConnectionProps) | Struct | Properties for defining a `CfnVPCPeeringConnection`. |
| [`CfnVPCProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPCProps) | Struct | Properties for defining a `CfnVPC`. |
| [`CfnVPNConcentratorProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConcentratorProps) | Struct | Properties for defining a `CfnVPNConcentrator`. |
| [`CfnVPNConnection.CloudwatchLogOptionsSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.CloudwatchLogOptionsSpecificationProperty) | Struct | Options for sending VPN tunnel logs to CloudWatch. |
| [`CfnVPNConnection.IKEVersionsRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.IKEVersionsRequestListValueProperty) | Struct | The IKE version that is permitted for the VPN tunnel. |
| [`CfnVPNConnection.Phase1DHGroupNumbersRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase1DHGroupNumbersRequestListValueProperty) | Struct | Specifies a Diffie-Hellman group number for the VPN tunnel for phase 1 IKE negotiations. |
| [`CfnVPNConnection.Phase1EncryptionAlgorithmsRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase1EncryptionAlgorithmsRequestListValueProperty) | Struct | Specifies the encryption algorithm for the VPN tunnel for phase 1 IKE negotiations. |
| [`CfnVPNConnection.Phase1IntegrityAlgorithmsRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase1IntegrityAlgorithmsRequestListValueProperty) | Struct | Specifies the integrity algorithm for the VPN tunnel for phase 1 IKE negotiations. |
| [`CfnVPNConnection.Phase2DHGroupNumbersRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase2DHGroupNumbersRequestListValueProperty) | Struct | Specifies a Diffie-Hellman group number for the VPN tunnel for phase 2 IKE negotiations. |
| [`CfnVPNConnection.Phase2EncryptionAlgorithmsRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase2EncryptionAlgorithmsRequestListValueProperty) | Struct | Specifies the encryption algorithm for the VPN tunnel for phase 2 IKE negotiations. |
| [`CfnVPNConnection.Phase2IntegrityAlgorithmsRequestListValueProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.Phase2IntegrityAlgorithmsRequestListValueProperty) | Struct | Specifies the integrity algorithm for the VPN tunnel for phase 2 IKE negotiations. |
| [`CfnVPNConnection.VpnTunnelLogOptionsSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.VpnTunnelLogOptionsSpecificationProperty) | Struct | Options for logging VPN tunnel activity. |
| [`CfnVPNConnection.VpnTunnelOptionsSpecificationProperty`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnection.VpnTunnelOptionsSpecificationProperty) | Struct | The tunnel options for a single VPN tunnel. |
| [`CfnVPNConnectionProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnectionProps) | Struct | Properties for defining a `CfnVPNConnection`. |
| [`CfnVPNConnectionRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNConnectionRouteProps) | Struct | Properties for defining a `CfnVPNConnectionRoute`. |
| [`CfnVPNGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNGatewayProps) | Struct | Properties for defining a `CfnVPNGateway`. |
| [`CfnVPNGatewayRoutePropagationProps`](/v2/docs/aws-cdk-lib.aws_ec2.CfnVPNGatewayRoutePropagationProps) | Struct | Properties for defining a `CfnVPNGatewayRoutePropagation`. |
| [`ClientRouteEnforcementOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ClientRouteEnforcementOptions) | Struct | Options for Client Route Enforcement. |
| [`ClientVpnAuthorizationRuleOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnAuthorizationRuleOptions) | Struct | Options for a ClientVpnAuthorizationRule. |
| [`ClientVpnAuthorizationRuleProps`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnAuthorizationRuleProps) | Struct | Properties for a ClientVpnAuthorizationRule. |
| [`ClientVpnEndpointAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnEndpointAttributes) | Struct | Attributes when importing an existing client VPN endpoint. |
| [`ClientVpnEndpointOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnEndpointOptions) | Struct | Options for a client VPN endpoint. |
| [`ClientVpnEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnEndpointProps) | Struct | Properties for a client VPN endpoint. |
| [`ClientVpnRouteOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnRouteOptions) | Struct | Options for a ClientVpnRoute. |
| [`ClientVpnRouteProps`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnRouteProps) | Struct | Properties for a ClientVpnRoute. |
| [`ClientVpnRouteTarget`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnRouteTarget) | Class | Target for a client VPN route. |
| [`ClientVpnSessionTimeout`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnSessionTimeout) | Enum | Maximum VPN session duration time. |
| [`ClientVpnUserBasedAuthentication`](/v2/docs/aws-cdk-lib.aws_ec2.ClientVpnUserBasedAuthentication) | Class | User-based authentication for a client VPN endpoint. |
| [`CloudFormationInit`](/v2/docs/aws-cdk-lib.aws_ec2.CloudFormationInit) | Class | A CloudFormation-init configuration. |
| [`CommonNetworkAclEntryOptions`](/v2/docs/aws-cdk-lib.aws_ec2.CommonNetworkAclEntryOptions) | Struct | Basic NetworkACL entry props. |
| [`ConfigSetProps`](/v2/docs/aws-cdk-lib.aws_ec2.ConfigSetProps) | Struct | Options for CloudFormationInit.withConfigSets. |
| [`ConfigureNatOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ConfigureNatOptions) | Struct | Options passed by the VPC when NAT needs to be configured. |
| [`ConnectionRule`](/v2/docs/aws-cdk-lib.aws_ec2.ConnectionRule) | Struct |  |
| [`Connections`](/v2/docs/aws-cdk-lib.aws_ec2.Connections) | Class | Manage the allowed network connections for constructs with Security Groups. |
| [`ConnectionsProps`](/v2/docs/aws-cdk-lib.aws_ec2.ConnectionsProps) | Struct | Properties to intialize a new Connections object. |
| [`CpuCredits`](/v2/docs/aws-cdk-lib.aws_ec2.CpuCredits) | Enum | Provides the options for specifying the CPU credit type for burstable EC2 instance types (T2, T3, T3a, etc). |
| [`CpuManufacturer`](/v2/docs/aws-cdk-lib.aws_ec2.CpuManufacturer) | Enum | CPU manufacturers supported by EC2 instances. |
| [`CreateIpv6CidrBlocksRequest`](/v2/docs/aws-cdk-lib.aws_ec2.CreateIpv6CidrBlocksRequest) | Struct | Request for IPv6 CIDR block to be split up. |
| [`DefaultInstanceTenancy`](/v2/docs/aws-cdk-lib.aws_ec2.DefaultInstanceTenancy) | Enum | The default tenancy of instances launched into the VPC. |
| [`DestinationOptions`](/v2/docs/aws-cdk-lib.aws_ec2.DestinationOptions) | Struct | Options for writing logs to a destination. |
| [`EbsDeviceOptions`](/v2/docs/aws-cdk-lib.aws_ec2.EbsDeviceOptions) | Struct | Block device options for an EBS volume. |
| [`EbsDeviceOptionsBase`](/v2/docs/aws-cdk-lib.aws_ec2.EbsDeviceOptionsBase) | Struct | Base block device options for an EBS volume. |
| [`EbsDeviceProps`](/v2/docs/aws-cdk-lib.aws_ec2.EbsDeviceProps) | Struct | Properties of an EBS block device. |
| [`EbsDeviceSnapshotOptions`](/v2/docs/aws-cdk-lib.aws_ec2.EbsDeviceSnapshotOptions) | Struct | Block device options for an EBS volume created from a snapshot. |
| [`EbsDeviceVolumeType`](/v2/docs/aws-cdk-lib.aws_ec2.EbsDeviceVolumeType) | Enum | Supported EBS volume types for blockDevices. |
| [`EgressRuleConfig`](/v2/docs/aws-cdk-lib.aws_ec2.EgressRuleConfig) | Struct | Configuration for an egress security group rule. |
| [`EnableVpnGatewayOptions`](/v2/docs/aws-cdk-lib.aws_ec2.EnableVpnGatewayOptions) | Struct | Options for the Vpc.enableVpnGateway() method. |
| [`ExecuteFileOptions`](/v2/docs/aws-cdk-lib.aws_ec2.ExecuteFileOptions) | Struct | Options when executing a file. |
| [`FlowLogDestination`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogDestination) | Class | The destination type for the flow log. |
| [`FlowLogDestinationConfig`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogDestinationConfig) | Struct | Flow Log Destination configuration. |
| [`FlowLogDestinationType`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogDestinationType) | Enum | The available destination types for Flow Logs. |
| [`FlowLogFileFormat`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogFileFormat) | Enum | The file format for flow logs written to an S3 bucket destination. |
| [`FlowLogMaxAggregationInterval`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogMaxAggregationInterval) | Enum | The maximum interval of time during which a flow of packets is captured and aggregated into a flow log record. |
| [`FlowLogOptions`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogOptions) | Struct | Options to add a flow log to a VPC. |
| [`FlowLogProps`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogProps) | Struct | Properties of a VPC Flow Log. |
| [`FlowLogResourceType`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogResourceType) | Class | The type of resource to create the flow log for. |
| [`FlowLogTrafficType`](/v2/docs/aws-cdk-lib.aws_ec2.FlowLogTrafficType) | Enum | The type of VPC traffic to log. |
| [`GatewayConfig`](/v2/docs/aws-cdk-lib.aws_ec2.GatewayConfig) | Struct | Pair represents a gateway created by NAT Provider. |
| [`GatewayVpcEndpointAwsService`](/v2/docs/aws-cdk-lib.aws_ec2.GatewayVpcEndpointAwsService) | Class | An AWS service for a gateway VPC endpoint. |
| [`GatewayVpcEndpointOptions`](/v2/docs/aws-cdk-lib.aws_ec2.GatewayVpcEndpointOptions) | Struct | Options to add a gateway endpoint to a VPC. |
| [`GatewayVpcEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.GatewayVpcEndpointProps) | Struct | Construction properties for a GatewayVpcEndpoint. |
| [`GenericLinuxImage`](/v2/docs/aws-cdk-lib.aws_ec2.GenericLinuxImage) | Class | Construct a Linux machine image from an AMI map. |
| [`GenericLinuxImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.GenericLinuxImageProps) | Struct | Configuration options for GenericLinuxImage. |
| [`GenericSSMParameterImage`](/v2/docs/aws-cdk-lib.aws_ec2.GenericSSMParameterImage) | Class | Select the image based on a given SSM parameter at deployment time of the CloudFormation Stack. |
| [`GenericWindowsImage`](/v2/docs/aws-cdk-lib.aws_ec2.GenericWindowsImage) | Class | Construct a Windows machine image from an AMI map. |
| [`GenericWindowsImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.GenericWindowsImageProps) | Struct | Configuration options for GenericWindowsImage. |
| [`HttpTokens`](/v2/docs/aws-cdk-lib.aws_ec2.HttpTokens) | Enum | The state of token usage for your instance metadata requests. |
| [`IClientVpnConnectionHandler`](/v2/docs/aws-cdk-lib.aws_ec2.IClientVpnConnectionHandler) | Interface | A connection handler for client VPN endpoints. |
| [`IClientVpnEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.IClientVpnEndpoint) | Interface | A client VPN endpoint. |
| [`IConnectable`](/v2/docs/aws-cdk-lib.aws_ec2.IConnectable) | Interface | An object that has a Connections object. |
| [`IFlowLog`](/v2/docs/aws-cdk-lib.aws_ec2.IFlowLog) | Interface | A FlowLog. |
| [`IGatewayVpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.IGatewayVpcEndpoint) | Interface | A gateway VPC endpoint. |
| [`IGatewayVpcEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.IGatewayVpcEndpointService) | Interface | A service for a gateway VPC endpoint. |
| [`IInstance`](/v2/docs/aws-cdk-lib.aws_ec2.IInstance) | Interface |  |
| [`IInterfaceVpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.IInterfaceVpcEndpoint) | Interface | An interface VPC endpoint. |
| [`IInterfaceVpcEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.IInterfaceVpcEndpointService) | Interface | A service for an interface VPC endpoint. |
| [`IIpAddresses`](/v2/docs/aws-cdk-lib.aws_ec2.IIpAddresses) | Interface | Implementations for ip address management. |
| [`IIpv6Addresses`](/v2/docs/aws-cdk-lib.aws_ec2.IIpv6Addresses) | Interface | Implementations for IPv6 address management. |
| [`IKeyPair`](/v2/docs/aws-cdk-lib.aws_ec2.IKeyPair) | Interface | An EC2 Key Pair. |
| [`ILaunchTemplate`](/v2/docs/aws-cdk-lib.aws_ec2.ILaunchTemplate) | Interface | Interface for LaunchTemplate-like objects. |
| [`IMachineImage`](/v2/docs/aws-cdk-lib.aws_ec2.IMachineImage) | Interface | Interface for classes that can select an appropriate machine image to use. |
| [`INetworkAcl`](/v2/docs/aws-cdk-lib.aws_ec2.INetworkAcl) | Interface | A NetworkAcl. |
| [`INetworkAclEntry`](/v2/docs/aws-cdk-lib.aws_ec2.INetworkAclEntry) | Interface | A NetworkAclEntry. |
| [`IngressRuleConfig`](/v2/docs/aws-cdk-lib.aws_ec2.IngressRuleConfig) | Struct | Configuration for an ingress security group rule. |
| [`InitCommand`](/v2/docs/aws-cdk-lib.aws_ec2.InitCommand) | Class | Command to execute on the instance. |
| [`InitCommandOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitCommandOptions) | Struct | Options for InitCommand. |
| [`InitCommandWaitDuration`](/v2/docs/aws-cdk-lib.aws_ec2.InitCommandWaitDuration) | Class | Represents a duration to wait after a command has finished, in case of a reboot (Windows only). |
| [`InitConfig`](/v2/docs/aws-cdk-lib.aws_ec2.InitConfig) | Class | A collection of configuration elements. |
| [`InitElement`](/v2/docs/aws-cdk-lib.aws_ec2.InitElement) | Class | Base class for all CloudFormation Init elements. |
| [`InitFile`](/v2/docs/aws-cdk-lib.aws_ec2.InitFile) | Class | Create files on the EC2 instance. |
| [`InitFileAssetOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitFileAssetOptions) | Struct | Additional options for creating an InitFile from an asset. |
| [`InitFileOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitFileOptions) | Struct | Options for InitFile. |
| [`InitGroup`](/v2/docs/aws-cdk-lib.aws_ec2.InitGroup) | Class | Create Linux/UNIX groups and assign group IDs. |
| [`InitPackage`](/v2/docs/aws-cdk-lib.aws_ec2.InitPackage) | Class | A package to be installed during cfn-init time. |
| [`InitService`](/v2/docs/aws-cdk-lib.aws_ec2.InitService) | Class | A services that be enabled, disabled or restarted when the instance is launched. |
| [`InitServiceOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitServiceOptions) | Struct | Options for an InitService. |
| [`InitServiceRestartHandle`](/v2/docs/aws-cdk-lib.aws_ec2.InitServiceRestartHandle) | Class | An object that represents reasons to restart an InitService. |
| [`InitSource`](/v2/docs/aws-cdk-lib.aws_ec2.InitSource) | Class | Extract an archive into a directory. |
| [`InitSourceAssetOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitSourceAssetOptions) | Struct | Additional options for an InitSource that builds an asset from local files. |
| [`InitSourceOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitSourceOptions) | Struct | Additional options for an InitSource. |
| [`InitUser`](/v2/docs/aws-cdk-lib.aws_ec2.InitUser) | Class | Create Linux/UNIX users and to assign user IDs. |
| [`InitUserOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InitUserOptions) | Struct | Optional parameters used when creating a user. |
| [`InstanceArchitecture`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceArchitecture) | Enum | Identifies an instance's CPU architecture. |
| [`InstanceClass`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceClass) | Enum | What class and generation of instance to use. |
| [`InstanceGeneration`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceGeneration) | Enum | Instance generation categories for EC2. |
| [`InstanceInitiatedShutdownBehavior`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceInitiatedShutdownBehavior) | Enum | Provides the options for specifying the instance initiated shutdown behavior. |
| [`InstanceProps`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceProps) | Struct | Properties of an EC2 Instance. |
| [`InstanceRequireImdsv2Aspect`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceRequireImdsv2Aspect) | Class | Aspect that applies IMDS configuration on EC2 Instance constructs. |
| [`InstanceRequireImdsv2AspectProps`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceRequireImdsv2AspectProps) | Struct | Properties for `InstanceRequireImdsv2Aspect`. |
| [`InstanceRequirementsConfig`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceRequirementsConfig) | Struct | The attributes for the instance types for a mixed instances policy. |
| [`InstanceSize`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceSize) | Enum | What size of instance to use. |
| [`InstanceType`](/v2/docs/aws-cdk-lib.aws_ec2.InstanceType) | Class | Instance type for EC2 instances. |
| [`InterfaceVpcEndpointAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointAttributes) | Struct | Construction properties for an ImportedInterfaceVpcEndpoint. |
| [`InterfaceVpcEndpointAwsService`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointAwsService) | Class | An AWS service for an interface VPC endpoint. |
| [`InterfaceVpcEndpointAwsServiceProps`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointAwsServiceProps) | Struct | Optional properties for the InterfaceVpcEndpointAwsService class. |
| [`InterfaceVpcEndpointOptions`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointOptions) | Struct | Options to add an interface endpoint to a VPC. |
| [`InterfaceVpcEndpointProps`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointProps) | Struct | Construction properties for an InterfaceVpcEndpoint. |
| [`InterfaceVpcEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.InterfaceVpcEndpointService) | Class | A custom-hosted service for an interface VPC endpoint. |
| [`IpAddresses`](/v2/docs/aws-cdk-lib.aws_ec2.IpAddresses) | Class | An abstract Provider of IpAddresses. |
| [`IpAddressType`](/v2/docs/aws-cdk-lib.aws_ec2.IpAddressType) | Enum | IP address types supported for VPC endpoint service. |
| [`IPeer`](/v2/docs/aws-cdk-lib.aws_ec2.IPeer) | Interface | Interface for classes that provide the peer-specification parts of a security group rule. |
| [`IPlacementGroup`](/v2/docs/aws-cdk-lib.aws_ec2.IPlacementGroup) | Interface | Determines where your instances are placed on the underlying hardware according to the specified PlacementGroupStrategy. |
| [`IpProtocol`](/v2/docs/aws-cdk-lib.aws_ec2.IpProtocol) | Enum | The types of IP addresses provisioned in the VPC. |
| [`IPrefixList`](/v2/docs/aws-cdk-lib.aws_ec2.IPrefixList) | Interface | A prefix list. |
| [`IPrivateSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.IPrivateSubnet) | Interface |  |
| [`IPublicSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.IPublicSubnet) | Interface |  |
| [`Ipv6Addresses`](/v2/docs/aws-cdk-lib.aws_ec2.Ipv6Addresses) | Class | An abstract Provider of Ipv6Addresses. |
| [`IRouteTable`](/v2/docs/aws-cdk-lib.aws_ec2.IRouteTable) | Interface | An abstract route table. |
| [`ISecurityGroup`](/v2/docs/aws-cdk-lib.aws_ec2.ISecurityGroup) | Interface | Interface for security group-like objects. |
| [`ISubnet`](/v2/docs/aws-cdk-lib.aws_ec2.ISubnet) | Interface |  |
| [`ISubnetNetworkAclAssociation`](/v2/docs/aws-cdk-lib.aws_ec2.ISubnetNetworkAclAssociation) | Interface | A SubnetNetworkAclAssociation. |
| [`IVolume`](/v2/docs/aws-cdk-lib.aws_ec2.IVolume) | Interface | An EBS Volume in AWS EC2. |
| [`IVpc`](/v2/docs/aws-cdk-lib.aws_ec2.IVpc) | Interface |  |
| [`IVpcEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.IVpcEndpoint) | Interface | A VPC endpoint. |
| [`IVpcEndpointService`](/v2/docs/aws-cdk-lib.aws_ec2.IVpcEndpointService) | Interface | A VPC endpoint service. |
| [`IVpcEndpointServiceLoadBalancer`](/v2/docs/aws-cdk-lib.aws_ec2.IVpcEndpointServiceLoadBalancer) | Interface | A load balancer that can host a VPC Endpoint Service. |
| [`IVpnConnection`](/v2/docs/aws-cdk-lib.aws_ec2.IVpnConnection) | Interface |  |
| [`IVpnGateway`](/v2/docs/aws-cdk-lib.aws_ec2.IVpnGateway) | Interface | The virtual private gateway interface. |
| [`KeyPairAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPairAttributes) | Struct | Attributes of a Key Pair. |
| [`KeyPairFormat`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPairFormat) | Enum | The format of the Key Pair. |
| [`KeyPairProps`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPairProps) | Struct | The properties of a Key Pair. |
| [`KeyPairType`](/v2/docs/aws-cdk-lib.aws_ec2.KeyPairType) | Enum | The type of the key pair. |
| [`LaunchTemplateAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateAttributes) | Struct | Attributes for an imported LaunchTemplate. |
| [`LaunchTemplateCpuOptions`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateCpuOptions) | Struct | The CPU options for the instance. |
| [`LaunchTemplateHttpTokens`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateHttpTokens) | Enum | The state of token usage for your instance metadata requests. |
| [`LaunchTemplateProps`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateProps) | Struct | Properties of a LaunchTemplate. |
| [`LaunchTemplateRequireImdsv2Aspect`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateRequireImdsv2Aspect) | Class | Aspect that applies IMDS configuration on EC2 Launch Template constructs. |
| [`LaunchTemplateRequireImdsv2AspectProps`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateRequireImdsv2AspectProps) | Struct | Properties for `LaunchTemplateRequireImdsv2Aspect`. |
| [`LaunchTemplateSpecialVersions`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateSpecialVersions) | Class | A class that provides convenient access to special version tokens for LaunchTemplate versions. |
| [`LaunchTemplateSpotOptions`](/v2/docs/aws-cdk-lib.aws_ec2.LaunchTemplateSpotOptions) | Struct | Interface for the Spot market instance options provided in a LaunchTemplate. |
| [`LinuxUserDataOptions`](/v2/docs/aws-cdk-lib.aws_ec2.LinuxUserDataOptions) | Struct | Options when constructing UserData for Linux. |
| [`LocalStorage`](/v2/docs/aws-cdk-lib.aws_ec2.LocalStorage) | Enum | Local storage support requirements for EC2 instances. |
| [`LocalStorageType`](/v2/docs/aws-cdk-lib.aws_ec2.LocalStorageType) | Enum | Types of local storage available for EC2 instances. |
| [`LocationPackageOptions`](/v2/docs/aws-cdk-lib.aws_ec2.LocationPackageOptions) | Struct | Options for InitPackage.rpm/InitPackage.msi. |
| [`LogFormat`](/v2/docs/aws-cdk-lib.aws_ec2.LogFormat) | Class | The following table describes all of the available fields for a flow log record. |
| [`LookupMachineImage`](/v2/docs/aws-cdk-lib.aws_ec2.LookupMachineImage) | Class | A machine image whose AMI ID will be searched using DescribeImages. |
| [`LookupMachineImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.LookupMachineImageProps) | Struct | Properties for looking up an image. |
| [`MachineImage`](/v2/docs/aws-cdk-lib.aws_ec2.MachineImage) | Class | Factory functions for standard Amazon Machine Image objects. |
| [`MachineImageConfig`](/v2/docs/aws-cdk-lib.aws_ec2.MachineImageConfig) | Struct | Configuration for a machine image. |
| [`MultipartBody`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartBody) | Class | The base class for all classes which can be used as `MultipartUserData`. |
| [`MultipartBodyOptions`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartBodyOptions) | Struct | Options when creating `MultipartBody`. |
| [`MultipartUserData`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserData) | Class | Mime multipart user data. |
| [`MultipartUserDataOptions`](/v2/docs/aws-cdk-lib.aws_ec2.MultipartUserDataOptions) | Struct | Options for creating `MultipartUserData`. |
| [`NamedPackageOptions`](/v2/docs/aws-cdk-lib.aws_ec2.NamedPackageOptions) | Struct | Options for InitPackage.yum/apt/rubyGem/python. |
| [`NatGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.NatGatewayProps) | Struct | Properties for a NAT gateway. |
| [`NatGatewayProvider`](/v2/docs/aws-cdk-lib.aws_ec2.NatGatewayProvider) | Class | Provider for NAT Gateways. |
| [`NatInstanceImage`](/v2/docs/aws-cdk-lib.aws_ec2.NatInstanceImage) | Class | Machine image representing the latest NAT instance image. |
| [`NatInstanceProps`](/v2/docs/aws-cdk-lib.aws_ec2.NatInstanceProps) | Struct | Properties for a NAT instance. |
| [`NatInstanceProvider`](/v2/docs/aws-cdk-lib.aws_ec2.NatInstanceProvider) | Class | NAT provider which uses NAT Instances. |
| [`NatInstanceProviderV2`](/v2/docs/aws-cdk-lib.aws_ec2.NatInstanceProviderV2) | Class | Modern NAT provider which uses NAT Instances. |
| [`NatProvider`](/v2/docs/aws-cdk-lib.aws_ec2.NatProvider) | Class | NAT providers. |
| [`NatTrafficDirection`](/v2/docs/aws-cdk-lib.aws_ec2.NatTrafficDirection) | Enum | Direction of traffic to allow all by default. |
| [`NetworkAclEntryProps`](/v2/docs/aws-cdk-lib.aws_ec2.NetworkAclEntryProps) | Struct | Properties to create NetworkAclEntry. |
| [`NetworkAclProps`](/v2/docs/aws-cdk-lib.aws_ec2.NetworkAclProps) | Struct | Properties to create NetworkAcl. |
| [`OperatingSystemType`](/v2/docs/aws-cdk-lib.aws_ec2.OperatingSystemType) | Enum | The OS type of a particular image. |
| [`Peer`](/v2/docs/aws-cdk-lib.aws_ec2.Peer) | Class | Peer object factories (to be used in Security Group management). |
| [`PlacementGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.PlacementGroupProps) | Struct | Props for a PlacementGroup. |
| [`PlacementGroupSpreadLevel`](/v2/docs/aws-cdk-lib.aws_ec2.PlacementGroupSpreadLevel) | Enum | Determines how this placement group spreads instances. |
| [`PlacementGroupStrategy`](/v2/docs/aws-cdk-lib.aws_ec2.PlacementGroupStrategy) | Enum | Which strategy to use when launching instances. |
| [`Port`](/v2/docs/aws-cdk-lib.aws_ec2.Port) | Class | Interface for classes that provide the connection-specification parts of a security group rule. |
| [`PortProps`](/v2/docs/aws-cdk-lib.aws_ec2.PortProps) | Struct | Properties to create a port range. |
| [`PrefixListLookupOptions`](/v2/docs/aws-cdk-lib.aws_ec2.PrefixListLookupOptions) | Struct | Properties for looking up an existing managed prefix list. |
| [`PrefixListOptions`](/v2/docs/aws-cdk-lib.aws_ec2.PrefixListOptions) | Struct | Options to add a prefix list. |
| [`PrefixListProps`](/v2/docs/aws-cdk-lib.aws_ec2.PrefixListProps) | Struct | Properties for creating a prefix list. |
| [`PrivateSubnetAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.PrivateSubnetAttributes) | Struct |  |
| [`PrivateSubnetProps`](/v2/docs/aws-cdk-lib.aws_ec2.PrivateSubnetProps) | Struct |  |
| [`Protocol`](/v2/docs/aws-cdk-lib.aws_ec2.Protocol) | Enum | Protocol for use in Connection Rules. |
| [`PublicSubnetAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.PublicSubnetAttributes) | Struct |  |
| [`PublicSubnetProps`](/v2/docs/aws-cdk-lib.aws_ec2.PublicSubnetProps) | Struct |  |
| [`RegionalNatGatewayProvider`](/v2/docs/aws-cdk-lib.aws_ec2.RegionalNatGatewayProvider) | Class | Provider for Regional NAT Gateways. |
| [`RegionalNatGatewayProviderProps`](/v2/docs/aws-cdk-lib.aws_ec2.RegionalNatGatewayProviderProps) | Struct | Properties for a Regional NAT Gateway Provider. |
| [`RequestedSubnet`](/v2/docs/aws-cdk-lib.aws_ec2.RequestedSubnet) | Struct | Subnet requested for allocation. |
| [`ResolveSsmParameterAtLaunchImage`](/v2/docs/aws-cdk-lib.aws_ec2.ResolveSsmParameterAtLaunchImage) | Class | Select the image based on a given SSM parameter at instance launch time. |
| [`RouterType`](/v2/docs/aws-cdk-lib.aws_ec2.RouterType) | Enum | Type of router used in route. |
| [`RuleConfig`](/v2/docs/aws-cdk-lib.aws_ec2.RuleConfig) | Struct | Common configuration properties shared by ingress and egress security group rules. |
| [`RuleScope`](/v2/docs/aws-cdk-lib.aws_ec2.RuleScope) | Struct | The scope and id in which a given SecurityGroup rule should be defined. |
| [`S3DestinationOptions`](/v2/docs/aws-cdk-lib.aws_ec2.S3DestinationOptions) | Struct | Options for writing logs to a S3 destination. |
| [`S3DownloadOptions`](/v2/docs/aws-cdk-lib.aws_ec2.S3DownloadOptions) | Struct | Options when downloading files from S3. |
| [`SecurityGroupImportOptions`](/v2/docs/aws-cdk-lib.aws_ec2.SecurityGroupImportOptions) | Struct | Additional options for imported security groups. |
| [`SecurityGroupProps`](/v2/docs/aws-cdk-lib.aws_ec2.SecurityGroupProps) | Struct |  |
| [`SelectedSubnets`](/v2/docs/aws-cdk-lib.aws_ec2.SelectedSubnets) | Struct | Result of selecting a subset of subnets from a VPC. |
| [`ServiceManager`](/v2/docs/aws-cdk-lib.aws_ec2.ServiceManager) | Enum | The service manager that will be used by InitServices. |
| [`SpotInstanceInterruption`](/v2/docs/aws-cdk-lib.aws_ec2.SpotInstanceInterruption) | Enum | Provides the options for the types of interruption for spot instances. |
| [`SpotRequestType`](/v2/docs/aws-cdk-lib.aws_ec2.SpotRequestType) | Enum | The Spot Instance request type. |
| [`SsmParameterImageOptions`](/v2/docs/aws-cdk-lib.aws_ec2.SsmParameterImageOptions) | Struct | Properties for GenericSsmParameterImage. |
| [`SubnetAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetAttributes) | Struct |  |
| [`SubnetConfiguration`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetConfiguration) | Struct | Specify configuration parameters for a single subnet group in a VPC. |
| [`SubnetFilter`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetFilter) | Class | Contains logic which chooses a set of subnets from a larger list, in conjunction with SubnetSelection, to determine where to place AWS resources such as VPC endpoints, EC2 instances, etc. |
| [`SubnetIpamOptions`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetIpamOptions) | Struct | CIDR Allocated Subnets. |
| [`SubnetNetworkAclAssociationProps`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetNetworkAclAssociationProps) | Struct | Properties to create a SubnetNetworkAclAssociation. |
| [`SubnetProps`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetProps) | Struct | Specify configuration parameters for a VPC subnet. |
| [`SubnetSelection`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetSelection) | Struct | Customize subnets that are selected for placement of ENIs. |
| [`SubnetType`](/v2/docs/aws-cdk-lib.aws_ec2.SubnetType) | Enum | The type of Subnet. |
| [`SystemdConfigFileOptions`](/v2/docs/aws-cdk-lib.aws_ec2.SystemdConfigFileOptions) | Struct | Options for creating a SystemD configuration file. |
| [`TrafficDirection`](/v2/docs/aws-cdk-lib.aws_ec2.TrafficDirection) | Enum | Direction of traffic the AclEntry applies to. |
| [`TransportProtocol`](/v2/docs/aws-cdk-lib.aws_ec2.TransportProtocol) | Enum | Transport protocol for client VPN. |
| [`UserData`](/v2/docs/aws-cdk-lib.aws_ec2.UserData) | Class | Instance User Data. |
| [`VolumeAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.VolumeAttributes) | Struct | Attributes required to import an existing EBS Volume into the Stack. |
| [`VolumeProps`](/v2/docs/aws-cdk-lib.aws_ec2.VolumeProps) | Struct | Properties of an EBS Volume. |
| [`VpcAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.VpcAttributes) | Struct | Properties that reference an external Vpc. |
| [`VpcEndpointDnsRecordIpType`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointDnsRecordIpType) | Enum | Enums for all Dns Record IP Address types. |
| [`VpcEndpointIpAddressType`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointIpAddressType) | Enum | IP address type for the endpoint. |
| [`VpcEndpointPrivateDnsOnlyForInboundResolverEndpoint`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointPrivateDnsOnlyForInboundResolverEndpoint) | Enum | Indicates whether to enable private DNS only for inbound endpoints. |
| [`VpcEndpointServiceProps`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointServiceProps) | Struct | Construction properties for a VpcEndpointService. |
| [`VpcEndpointType`](/v2/docs/aws-cdk-lib.aws_ec2.VpcEndpointType) | Enum | The type of VPC endpoint. |
| [`VpcIpamOptions`](/v2/docs/aws-cdk-lib.aws_ec2.VpcIpamOptions) | Struct | CIDR Allocated Vpc. |
| [`VpcLookupOptions`](/v2/docs/aws-cdk-lib.aws_ec2.VpcLookupOptions) | Struct | Properties for looking up an existing VPC. |
| [`VpcProps`](/v2/docs/aws-cdk-lib.aws_ec2.VpcProps) | Struct | Configuration for Vpc. |
| [`VpnConnectionAttributes`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnectionAttributes) | Struct | Attributes of an imported VpnConnection. |
| [`VpnConnectionOptions`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnectionOptions) | Struct |  |
| [`VpnConnectionProps`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnectionProps) | Struct |  |
| [`VpnConnectionType`](/v2/docs/aws-cdk-lib.aws_ec2.VpnConnectionType) | Enum | The VPN connection type. |
| [`VpnGatewayProps`](/v2/docs/aws-cdk-lib.aws_ec2.VpnGatewayProps) | Struct | The VpnGateway Properties. |
| [`VpnPort`](/v2/docs/aws-cdk-lib.aws_ec2.VpnPort) | Enum | Port for client VPN. |
| [`VpnTunnelOption`](/v2/docs/aws-cdk-lib.aws_ec2.VpnTunnelOption) | Struct |  |
| [`WindowsImage`](/v2/docs/aws-cdk-lib.aws_ec2.WindowsImage) | Class | Select the latest version of the indicated Windows version. |
| [`WindowsImageProps`](/v2/docs/aws-cdk-lib.aws_ec2.WindowsImageProps) | Struct | Configuration options for WindowsImage. |
| [`WindowsUserDataOptions`](/v2/docs/aws-cdk-lib.aws_ec2.WindowsUserDataOptions) | Struct | Options when constructing UserData for Windows. |
| [`WindowsVersion`](/v2/docs/aws-cdk-lib.aws_ec2.WindowsVersion) | Enum | The Windows version to use for the WindowsImage. |