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::ImageBuilder::DistributionConfiguration FastLaunchConfiguration
<a name="aws-properties-imagebuilder-distributionconfiguration-fastlaunchconfiguration"></a>

Define and configure faster launching for output Windows AMIs.

## Syntax
<a name="aws-properties-imagebuilder-distributionconfiguration-fastlaunchconfiguration-syntax"></a>

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

### JSON
<a name="aws-properties-imagebuilder-distributionconfiguration-fastlaunchconfiguration-syntax.json"></a>

```
{
  "[AccountId](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-accountid)" : String,
  "[Enabled](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-enabled)" : Boolean,
  "[LaunchTemplate](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-launchtemplate)" : FastLaunchLaunchTemplateSpecification,
  "[MaxParallelLaunches](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-maxparallellaunches)" : Integer,
  "[SnapshotConfiguration](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-snapshotconfiguration)" : FastLaunchSnapshotConfiguration
}
```

### YAML
<a name="aws-properties-imagebuilder-distributionconfiguration-fastlaunchconfiguration-syntax.yaml"></a>

```
  [AccountId](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-accountid): String
  [Enabled](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-enabled): Boolean
  [LaunchTemplate](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-launchtemplate): 
    FastLaunchLaunchTemplateSpecification
  [MaxParallelLaunches](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-maxparallellaunches): Integer
  [SnapshotConfiguration](#cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-snapshotconfiguration): 
    FastLaunchSnapshotConfiguration
```

## Properties
<a name="aws-properties-imagebuilder-distributionconfiguration-fastlaunchconfiguration-properties"></a>

`AccountId`  <a name="cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-accountid"></a>
The owner account ID for the fast-launch enabled Windows AMI.  
*Required*: No  
*Type*: String  
*Pattern*: `^[0-9]{12}$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Enabled`  <a name="cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-enabled"></a>
A Boolean that represents the current state of faster launching for the Windows AMI. Set to `true` to start using Windows faster launching, or `false` to stop using it.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`LaunchTemplate`  <a name="cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-launchtemplate"></a>
The launch template that the fast-launch enabled Windows AMI uses when it launches Windows instances to create pre-provisioned snapshots.  
*Required*: No  
*Type*: [FastLaunchLaunchTemplateSpecification](aws-properties-imagebuilder-distributionconfiguration-fastlaunchlaunchtemplatespecification.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`MaxParallelLaunches`  <a name="cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-maxparallellaunches"></a>
The maximum number of parallel instances that are launched for creating resources.  
*Required*: No  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`SnapshotConfiguration`  <a name="cfn-imagebuilder-distributionconfiguration-fastlaunchconfiguration-snapshotconfiguration"></a>
Configuration settings for managing the number of snapshots that are created from pre-provisioned instances for the Windows AMI when faster launching is enabled.  
*Required*: No  
*Type*: [FastLaunchSnapshotConfiguration](aws-properties-imagebuilder-distributionconfiguration-fastlaunchsnapshotconfiguration.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)