This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::AppMesh::VirtualGateway VirtualGatewaySpec
<a name="aws-properties-appmesh-virtualgateway-virtualgatewayspec"></a>

An object that represents the specification of a service mesh resource.

## Syntax
<a name="aws-properties-appmesh-virtualgateway-virtualgatewayspec-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-appmesh-virtualgateway-virtualgatewayspec-syntax.json"></a>

```
{
  "[BackendDefaults](#cfn-appmesh-virtualgateway-virtualgatewayspec-backenddefaults)" : VirtualGatewayBackendDefaults,
  "[Listeners](#cfn-appmesh-virtualgateway-virtualgatewayspec-listeners)" : [ VirtualGatewayListener, ... ],
  "[Logging](#cfn-appmesh-virtualgateway-virtualgatewayspec-logging)" : VirtualGatewayLogging
}
```

### YAML
<a name="aws-properties-appmesh-virtualgateway-virtualgatewayspec-syntax.yaml"></a>

```
  [BackendDefaults](#cfn-appmesh-virtualgateway-virtualgatewayspec-backenddefaults): 
    VirtualGatewayBackendDefaults
  [Listeners](#cfn-appmesh-virtualgateway-virtualgatewayspec-listeners): 
    - VirtualGatewayListener
  [Logging](#cfn-appmesh-virtualgateway-virtualgatewayspec-logging): 
    VirtualGatewayLogging
```

## Properties
<a name="aws-properties-appmesh-virtualgateway-virtualgatewayspec-properties"></a>

`BackendDefaults`  <a name="cfn-appmesh-virtualgateway-virtualgatewayspec-backenddefaults"></a>
A reference to an object that represents the defaults for backends.  
*Required*: No  
*Type*: [VirtualGatewayBackendDefaults](aws-properties-appmesh-virtualgateway-virtualgatewaybackenddefaults.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Listeners`  <a name="cfn-appmesh-virtualgateway-virtualgatewayspec-listeners"></a>
The listeners that the mesh endpoint is expected to receive inbound traffic from. You can specify one listener.  
*Required*: Yes  
*Type*: Array of [VirtualGatewayListener](aws-properties-appmesh-virtualgateway-virtualgatewaylistener.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Logging`  <a name="cfn-appmesh-virtualgateway-virtualgatewayspec-logging"></a>
An object that represents logging information.  
*Required*: No  
*Type*: [VirtualGatewayLogging](aws-properties-appmesh-virtualgateway-virtualgatewaylogging.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)