ddd

Domain-Driven Design (DDD) aligns code with business domains by separating software architecture into distinct layers. It enforces dependency rules to isolate domain logic, application use cases, and infrastructure concerns for scalable enterprise software.

Entities and Value Objects are core DDD object modeling concepts. Entities possess a distinct identity that persists over time, whereas Value Objects are defined purely by their attributes and can be easily replaced without affecting domain logic.

Implement DDD by structuring code into domain, application, and infrastructure layers. Enforce strict dependency rules where infrastructure depends on application, and application depends on the domain, ensuring domain logic remains isolated and maintainable.

Use Domain-Driven Design when developing complex enterprise software with intricate business rules. It is ideal when a development team needs to align code with business domains to improve maintainability and enable easier feature development.

Handle service patterns in DDD by using application services for orchestration, input handling, and response DTOs. Integrate gateways and mappers to translate external data, keeping the core domain layer focused strictly on business logic.

Separating domain logic from infrastructure in enterprise software prevents business rules from becoming tightly coupled to external technologies. This alignment simplifies complex software development, testing, and future feature scalability.