# Asg
<a name="API_Asg"></a>

Configuration for an Amazon EC2 Auto Scaling group used in a Region switch plan.

## Contents
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 ** arn **   <a name="regionswitch-Type-Asg-arn"></a>
The Amazon Resource Name (ARN) of the EC2 Auto Scaling group.  
Type: String  
Pattern: `arn:aws[a-zA-Z-]*:autoscaling:[a-z0-9-]+:\d{12}:autoScalingGroup:[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}:autoScalingGroupName/[\S\s]{1,255}`   
Required: No

 ** crossAccountRole **   <a name="regionswitch-Type-Asg-crossAccountRole"></a>
The cross account role for the configuration.  
Type: String  
Pattern: `arn:aws[a-zA-Z0-9-]*:iam::[0-9]{12}:role/.+`   
Required: No

 ** externalId **   <a name="regionswitch-Type-Asg-externalId"></a>
The external ID (secret key) for the configuration.  
Type: String  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/arc-region-switch-2022-07-26/Asg) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/arc-region-switch-2022-07-26/Asg) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/arc-region-switch-2022-07-26/Asg)