Domain-Driven Design
Domain-Driven Design (DDD) is a software development methodology that focuses on modeling complex business domains by aligning the software's structure and language with the core business concepts and processes. It emphasizes collaboration between technical teams and domain experts to create a shared understanding through a ubiquitous language, and structures the system around bounded contexts and aggregates to manage complexity.
Developers should learn DDD when building enterprise applications with intricate business logic, such as financial systems, e-commerce platforms, or healthcare software, where clear domain modeling is critical for maintainability and scalability. It helps reduce technical debt by ensuring the codebase reflects real-world business rules, making it easier to adapt to changing requirements and integrate with other systems.