: Decoupled systems allow for easier unit testing of business rules without requiring a live database.
: Focuses on "what" the system does rather than "how" it's stored, which is vital for long-term project health. : Decoupled systems allow for easier unit testing
: By isolating the business logic, you can change your database or web framework without rewriting the core domain. : Clusters of domain objects treated as a
: Clusters of domain objects treated as a single unit for data changes. For instance, a Customer aggregate might encapsulate validation and ID generation within a factory function like NewCustomer . Entities & Value Objects : Strategic Benefits : Objects with a unique identity
: Use Ports & Adapters (Hexagonal Architecture) alongside DDD to ensure that external technologies (like MongoDB or Postgres) do not leak into the business logic. Strategic Benefits
: Objects with a unique identity that persists over time.