Kas saaksite selgitada Domain-kihi struktuuri ja rolli Clean Architecture'is?

In Clean Architecture, the Domain layer is the core of the application, where business logic and domain rules are concentrated. It is independent of external layers (UI, infrastructure, database) and contains:

• Entities — objects with business rules and state.
• Repository interfaces — abstractions for data access.
• Use Cases (Interactors) — specific usage scenarios implementing business logic.

The role of the Domain layer is to ensure the purity and independence of business logic so that changes in external layers do not affect the main application logic.