What's inside:
* A step-by-step tutorial refactoring a legacy big-ball-of-mud into self-contained modules.
* A bit of a challenge to Clean/Hexagonal Architectures with a pattern I've seen in the wild (which I named MIM in the text).
* A solid appendix on the fundamentals of Modular Design.
(Warning: It’s a long read. I’ve seen shorter ebooks on Leanpub).