Domain-driven design (DDD) by Eric Evans (Addison-Wesley, 2004) should occupy an honored place on every software engineer's bookshelf. This is because it defines and formalizes an important theoretical basis for a successful microservices architecture. DDD establishes a common vocabulary (namely, context, domain, model, and ubiquitous language) and formulates a set of principles for maintaining model integrity. One of the most important consequences of DDD is that individual bounded contexts defined in terms of DDD are usually mapped into separate microservices, demonstrated as follows:
Diagram 7.1 Bounded contexts (good ...
