Domain-Driven Design: Tackling Complexity in the Heart of Software

IV: Strategic Design

As systems grow too complex to know completely at the level of individual objects, we need techniques for manipulating and comprehending large models. This part of the book presents principles that enable the modeling process to scale up to very complicated domains. Most such decisions must be made at team level or even negotiated between teams. These are the decisions where design and politics often intersect.

The goal of the most ambitious enterprise system is a tightly integrated system spanning the entire business. Yet the entire business model for almost any such organization is too large and complex to manage or even understand as a single unit. The system must be broken into smaller parts, in both concept and implementation. ...