Business Domain Partitioning
Updated 2026-08-10
INTRODUCTION
English translation pending.
CORE DEFINITION
The practice of partitioning a complex business into domains with clear boundaries, each maintaining a relatively independent set of concepts and rules, as in domain-driven design. Its core proposition is that without partitioning, concepts and rules become entangled and the cost of understanding and changing anything rises exponentially, while high cohesion within a domain and low coupling between them reduces complexity to manageable local problems. The qualifier is that boundaries must follow the business rather than the technology.
SCAFFOLDING EFFECT
Reduce cognitive load
- Boundary finding: locate the natural seams where business concepts and rules change. - Domain cut: split along those seams so each domain is internally cohesive and externally decoupled. - Interface discipline: define how domains interact and hold that boundary as the system evolves.
Anchor fast decisions
In an undivided system every concept is potentially connected to every other, so a change anywhere can propagate anywhere and the effort of understanding grows with the whole. Cutting along natural boundaries confines each concept's influence to its own domain, so changes stay local and the system can be reasoned about one part at a time.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Domain-driven_designverified
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