Common types of idle resources include:
1)Unused instances: Instances that are running but not performing any tasks.
2)Underutilized storage: Storage volumes that are allocated but contain little or no data.
3)Orphaned snapshots: Backup snapshots that are no longer needed.
4)Inactive databases: Databases that are provisioned but not actively queried or updated.
Unattached IP addresses: Reserved IP addresses not currently associated with any instance.