Using service-linked roles for Evidently - Amazon CloudWatch
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Using service-linked roles for Evidently

CloudWatch Evidently uses Amazon Identity and Access Management (IAM) service-linked roles. A service-linked role is a unique type of IAM role that is linked directly to Evidently. Service-linked roles are predefined by Evidently and include all the permissions that the service requires to call other Amazon services on your behalf.

A service-linked role makes setting up Evidently easier because you don’t have to manually add the necessary permissions. Evidently defines the permissions of its service-linked roles, and unless defined otherwise, only Evidently can assume its roles. The defined permissions include the trust policy and the permissions policy, and that permissions policy cannot be attached to any other IAM entity.

You can delete a service-linked role only after first deleting its related resources. This protects your Evidently resources because you can't inadvertently remove permission to access the resources.

For information about other services that support service-linked roles, see Amazon Services That Work with IAM and look for the services that have Yes in the Service-linked roles column. Choose a Yes with a link to view the service-linked role documentation for that service.

Service-linked role permissions for Evidently

Evidently uses the service-linked role named AWSServiceRoleForCloudWatchEvidently – Allows CloudWatch Evidently to manage associated Amazon resourcees on behalf of the customer.

The AWSServiceRoleForCloudWatchEvidently service-linked role trusts the following services to assume the role:

  • CloudWatch Evidently

The role permissions policy named AmazonCloudWatchEvidentlyServiceRolePolicy allows Evidently to complete the following actions on the specified resources:

  • Actions: appconfig:StartDeployment, appconfig:StopDeployment, appconfig:ListDeployments, and appconfig:TagResource on Evidently thick clients.

You must configure permissions to allow an IAM entity (such as a user, group, or role) to create, edit, or delete a service-linked role. For more information, see Service-linked role permissions in the IAM User Guide.

Creating a service-linked role for Evidently

You don't need to manually create a service-linked role. When you start using an Evidently thick client in the Amazon Web Services Management Console, the Amazon CLI, or the Amazon API, Evidently creates the service-linked role for you.

If you delete this service-linked role, and then need to create it again, you can use the same process to recreate the role in your account. When you start using an Evidently thick client, Evidently creates the service-linked role for you again.

Editing a service-linked role for Evidently

Evidently does not allow you to edit the AWSServiceRoleForCloudWatchEvidently service-linked role. After you create a service-linked role, you cannot change the name of the role because various entities might reference the role. However, you can edit the description of the role using IAM. For more information, see Editing a service-linked role in the IAM User Guide.

Deleting a service-linked role for Evidently

If you no longer need to use a feature or service that requires a service-linked role, we recommend that you delete that role. That way you don’t have an unused entity that is not actively monitored or maintained. However, you must clean up the resources for your service-linked role before you can manually delete it. You must delete all Evidently projects that are using thick clients.


If the Evidently service is using the role when you try to delete the resources, then the deletion might fail. If that happens, wait for a few minutes and try the operation again.

To delete Evidently resources used by AWSServiceRoleForCloudWatchEvidently
  1. Open the CloudWatch console at

  2. In the navigation pane, choose Application monitoring, Evidently.

  3. In the list of projects, select the check box next to the projects that used thick clients.

  4. Choose Project actions, Delete project.

To manually delete the service-linked role using IAM

Use the IAM console, the Amazon CLI, or the Amazon API to delete the AWSServiceRoleForCloudWatchEvidently service-linked role. For more information, see Deleting a service-linked role in the IAM User Guide.

Supported regions for Evidently service-linked roles

Evidently supports using service-linked roles in all of the regions where the service is available. For more information, see Amazon regions and endpoints.