AWS Identity and Access Management (IAM) now provides action last accessed information for more than 60 additional services to help you refine the permissions of your IAM roles. You can use action last accessed information to identify unused permissions and refine the access of your IAM roles to only the actions they use. With this release, you can review action last accessed information for services such as AWS Auto Scaling, Amazon Redshift, and Amazon Route 53 to better adhere to the best practice of least privilege.
Source:: Amazon AWS