[maxdo]

If you deploy same binary under different roles, it's same issue with complexity.

With modern tooling deployment and managed storages is not a problem at all you use templates or buildbacks or even lambda combined with gitlab github CI abilities. Recent progress allows you to embrace zero-ops and microservices. In my team we don't have a dedicated ops person, and deployment from dev to prod is running via git by developer.

Node itself has a very bad profiling tooling compares to more "adult" languages. if you run a microservice it's much easier to spot a problem in CPU or especially memory leak. And vise versa if you doing something in scala, or java, microservices benefits are minor. It's also so much easier later to rewrite some of the services in a more performant language.