Description Currently, Cloud Custodian does not support AWS DMS replication instances (aws.dms-instance) as a resource type. Due to this limitation, we are unable to implement governance and cost optimization policies for DMS replication instances. Use Case Customer requirement to identify idle DMS replication instances: Instances with no associated replication tasks Instances that are unused/idle for >30 days Include these in recommendations for cleanup or cost optimization At present, this use case cannot be achieved since the resource type is not supported in Custodian. Expected Outcome Add support for aws.dms-instance in Cloud Custodian Enable filtering based on: Instance attributes (ARN, status, creation time, etc.) Association with replication tasks Support standard actions like: Notify Tag Delete