Find any unused Amazon Machine Images available in your AWS account and remove them in order to lower the cost of your monthly AWS bill. The AMI removal/cleanup process consists of two steps: 1) deregister the unused image and 2) delete the snapshot associated with it.
This rule can help you with the following compliance standards:
This rule can help you work with the AWS Well-Architected Framework
This rule resolution is part of the Cloud Conformity Cost Management tool for AWS
The AMIs created in your AWS account are adding charges to your monthly bill, regardless whether are being used or not. Many AWS customers will deregister their images but forget to delete the AMIs snapshots, therefore continue to incur storage costs. Cloud Conformity recommends implementing the two-step cleanup process shown in the Remediation/Resolution section in order to avoid any unexpected charges on your AWS bill.
To identify any unused EC2 AMIs within your AWS account, perform the following:
To remove any unused Amazon Machine Images (AMIs) available within your account, you need to deregister the image and then delete the associated snapshot. To implement the removal process, perform the following: