It is for people who run big systems because the title includes the words "distributed computing". They might as well have called this paper "building skyscrape

It is for people who run big systems because the title includes the words "distributed computing". They might as well have called this paper "building skyscrapers in your back yard" (which is a pretty good name for a paper I think!). If you don't write your app to be capable of running on multiple nodes, you aren't doing distributed computing - you're doing concurrent computing. If there's nothing out there that picks a stack for you, that could certainly be automated based on a Q&A for the dev. But it's arguable that this decision should not be automated, because this decision directly impacts how the app works.