Domain-Driven Design (DDD) is an approach to software development that is focused on modeling and implementing the business domain of an application. It is a set of principles, patterns, and practices that are used to help developers understand and represent the complex business domain of an application, and to design and implement software systems that are aligned with that domain.
DDD is based on the idea that the business domain of an application is a complex and constantly evolving entity, and that it is essential to model and understand that domain in order to build effective and maintainable software systems. DDD provides a set of tools and techniques that are used to model the business domain, including domain entities, value objects, aggregates, and services.
DDD is often used in combination with other software architecture patterns, such as microservices architecture, event-driven architecture, and service-oriented architecture. It provides a set of principles and practices that are used to guide the design and implementation of software systems, and helps developers to build applications that are aligned with the business domain and that are easy to understand and maintain.