domain

The domain layer, also known as the business logic layer, is a core component of software architecture that encapsulates the business rules, logic, and behaviors of a system. It represents the heart of the application, where the primary focus is on modeling and implementing the concepts and processes relevant to the problem domain.

In the domain layer, you'll find entities, which represent the key objects or concepts within the system, along with their attributes and relationships. Additionally, the domain layer often includes repositories or data access interfaces, defining how the application interacts with the underlying data storage.

One of the key principles of the domain layer is separation of concerns, aiming to keep business logic decoupled from other parts of the system such as user interface or infrastructure concerns.

This separation promotes maintainability, testability, and flexibility in the software design.

Overall, the domain layer serves as the backbone of the application, providing a clear and organized representation of the business domain and enabling developers to implement and evolve complex business logic effectively.