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::SageMaker::Domain RSessionAppSettings
<a name="aws-properties-sagemaker-domain-rsessionappsettings"></a>

A collection of settings that apply to an `RSessionGateway` app.

## Syntax
<a name="aws-properties-sagemaker-domain-rsessionappsettings-syntax"></a>

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

### JSON
<a name="aws-properties-sagemaker-domain-rsessionappsettings-syntax.json"></a>

```
{
  "[CustomImages](#cfn-sagemaker-domain-rsessionappsettings-customimages)" : [ CustomImage, ... ],
  "[DefaultResourceSpec](#cfn-sagemaker-domain-rsessionappsettings-defaultresourcespec)" : ResourceSpec
}
```

### YAML
<a name="aws-properties-sagemaker-domain-rsessionappsettings-syntax.yaml"></a>

```
  [CustomImages](#cfn-sagemaker-domain-rsessionappsettings-customimages): 
    - CustomImage
  [DefaultResourceSpec](#cfn-sagemaker-domain-rsessionappsettings-defaultresourcespec): 
    ResourceSpec
```

## Properties
<a name="aws-properties-sagemaker-domain-rsessionappsettings-properties"></a>

`CustomImages`  <a name="cfn-sagemaker-domain-rsessionappsettings-customimages"></a>
A list of custom SageMaker AI images that are configured to run as a RSession app.  
*Required*: No  
*Type*: Array of [CustomImage](aws-properties-sagemaker-domain-customimage.md)  
*Minimum*: `0`  
*Maximum*: `200`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DefaultResourceSpec`  <a name="cfn-sagemaker-domain-rsessionappsettings-defaultresourcespec"></a>
Specifies the ARNs of a SageMaker image and SageMaker image version, and the instance type that the version runs on.  
*Required*: No  
*Type*: [ResourceSpec](aws-properties-sagemaker-domain-resourcespec.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)