Stress testing a whole app ecosystem end-end and preventing/mitigating end user impact is generally a part of "gamedays" - https://wa.aws.amazon.com/wat.concept

Stress testing a whole app ecosystem end-end and preventing/mitigating end user impact is generally a part of "gamedays" - https://wa.aws.amazon.com/wat.concept.gameday.en.html https://wa.aws.amazon.com/wat.concept.gameday.en.html. A library like AWSSSMChaosRunner would be a core component of building gameday like capability. But building a full gameday framework is out of the scope of this discussion.