domain-driven-design

Domain-driven design models software around business domains using bounded contexts to reduce ambiguity and coupling. It is needed when teams face complex domains requiring clear boundaries, shared ubiquitous language, and scalable architectures across multiple contexts.

Use ubiquitous language to align domain models with business terminology, then define aggregates and entities to enforce invariants. This structures code and collaboration by ensuring business rules are strictly maintained within aggregate boundaries.

Collaborate with domain experts to map the domain, define bounded contexts, and implement core aggregates using ubiquitous language. Structure code using entities, value objects, domain events, and repositories to balance core versus generic needs.

Domain-driven design works for scalable architectures by establishing bounded contexts with explicit boundaries and translations. Strategic design patterns balance core and generic needs across multiple contexts, enabling teams to manage complex domains effectively.

The best way to structure collaboration is adopting ubiquitous language to improve communication between domain experts and engineers. Define bounded contexts, aggregates, and domain events to align software models directly with business domains.

Domain-driven design should not be used for simple domains lacking complex business rules or multiple bounded contexts. It requires significant collaboration with domain experts and strategic design patterns, making it excessive for straightforward applications.