[name] asked: what is DDD (Domain-Driven Design)?

Domain-Driven Design (DDD) is an approach to software development that focuses on a deep understanding of the subject area (domain) and building a model that reflects business logic. The main idea of DDD is close collaboration between developers and domain experts to create understandable and maintainable architecture.

Key concepts of DDD:

• Domain Model — an abstraction that reflects business rules and processes.
• Ubiquitous Language — a common language used by both developers and business experts.
• Bounded Context — a clearly defined area within which the model and language have unambiguous meaning.
• Entities and Value Objects — the main building blocks of the model.
• Aggregates — groups of related objects considered as a single unit to ensure integrity.

DDD helps create flexible, scalable, and understandable systems, especially in complex business domains.