+1

> Unless you need multiple servers processing data through multiple steps and you need the auditing and process control

I'll stress the "multiple servers" part. You can add in a substantial amount of multiple, sequential steps and auditing and process control in a simple script. The part that adds orders of magnitude worth of complexity and operational overhead and points of failure is being able to distribute it to multiple servers. Distributed architectures are operationally and architecturally expensive. And far more often than not, completely unnecessary for a given use case.