Domain-Driven Design (DDD) is not typically considered an architecture in software engineering. Instead, DDD is an approach or methodology for designing software systems that aims to align the software design with the business domain it serves.

DDD emphasizes modeling the business domain in the software design, focusing on understanding the problem domain, its concepts, and the relationships between them. It promotes collaboration between domain experts and software developers to ensure that the software system reflects the real-world domain accurately.

While DDD does provide guidance on designing the overall structure of the software system, it does not prescribe specific architectural styles or patterns. Instead, DDD is often combined with other architectural approaches, such as layered architecture, hexagonal architecture, or microservices architecture, to realize the software system.

In summary, Domain-Driven Design is a methodology for designing software systems that focuses on aligning the software design with the business domain. It is not considered an architecture itself but can be used in conjunction with various architectural styles and patterns to create well-designed software systems.

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