[grandalf]

Makes sense. I typically try to design things so that they are initially joined (for convenience) but can easily be split off -- such as a simple router between micro-apps which can be replaced by haproxy (or similar) later.

[anezvigin]

I like this too and usually do the same in the application layer for new projects (though it takes more discipline).

Every module is built with the intent of breaking away later. Disallowing intra-module communication is essential to this. That means no global ORMs or global anything really.