Modularization: Foundation of Microservices and Monoliths
summary
Argues that microservices are just one way to build modules and that structural quality depends on module boundaries not deployment style; reviews classic modularization principles (Parnas's information hiding and module interfaces) and maps them to concrete architectural choices for monoliths and microservices; shows patterns for defining boundaries, examples of coupling metrics and mistakes to avoid, and practical heuristics for day‑to‑day architecture work.
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