Clean Architecture: A Craftsman's Guide to Software Structure and the Design of Professional Systems

Why this matters here

Martin’s Clean Architecture argues for cohesion-oriented boundaries and stable reasons to change so systems keep related responsibilities together and protect cores behind clear interfaces. Coupling uses that design vocabulary after dependency talk: high cohesion means parts support one job; low cohesion mixes unrelated work that only looks efficient at first. The source is software architecture craft; the book asks whether loose coupling and clear contracts still fail when things that do not belong together share a fate.