Selecting between ECS vs AWS Batch

Question

AWS Batch documentation says it is based on ECS.

So why shouldn't we just use ECS? What pressing benefits does AWS Batch offer that are not available in ECS?

Both offer autoscaling as well. Is queuing and priority of jbos the only advantages of AWS Batch?

Answer 1

AWS Batch is a management/abstraction layer on top of ECS and EC2 (and some other AWS resources). It does some things for you, like cost optimization, that can be difficult to do yourself. Think of it like Elastic Beanstalk for batch operations. It provides a management layer on top of lower-level AWS resources, but if you are comfortable managing those lower level resources yourself and want more control over them it is certainly an option to use those lower-level resources directly.