I recently wrote up a lot about this:<p><a href="https:&#x2F;&#x2F;convox.com&#x2F;blog&#x2F;ecs-challenges&#x2F;" rel="nofollow">https:&#x2F;&#x2F;convox.com&#x2F;blog&#x2F;ecs-challenges&#x2F;</a><p>TL:dr it works very well. It&#x27;s very flexible. But Amazon is still very hard for a lot of reasons.<p>One piece of data to share is that with ECS we are effortlessly running hundreds of production clusters and thousands of test clusters.<p>I&#x27;m not sure we could do this if ECS didn&#x27;t exist.