I'm referring specifically to this feature: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-rollback-triggers.html https://docs.aws.ama

I'm referring specifically to this feature: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-rollback-triggers.html https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGui... CFn will allow you to specify up to 5 alarms to monitor during stack deployment as well as a duration to monitor them for up to 3 hours. During deployment, the stack does not transition into the COMPLETE state until the monitor duration has completed without the alarms being triggered. If one of the alarms is triggered, the stack immediately rolls back. Since failed ECS tasks create CW Events, you can set up alarms on them and use them as the rollback monitor trigger.