Destroy ephemeral environments after no activity: If your team opens a high volume of Pull Requests and your cluster is filling up quickly, then it's a good idea to destroy your ephemeral environments as they become stale. If you switch this feature on, then you can determine how long your ephemeral environments will stay alive. If you have a low volume of Pull Requests, then you could leave this off and manually clean up environments as they are no longer needed. If you need an old ephemeral environment in Release that has expired, you can easily re-create it by closing the stale Pull Request re-opening it, or by turning on the Recreate feature described above.