Could you tell about your experience with architecture involving modular separation in your last project?

In my latest Android project, I used a modular architecture, dividing the application into several independent modules: UI, business logic, data handling, and network layer. This allowed isolating the responsibility of each module, improving testability, and speeding up the build process.

For example, the UI module contained only fragments and activities, the business logic was in a separate module with ViewModel and UseCase, and data access was implemented through repositories in the data module. This approach enabled different teams to work in parallel and easily update individual parts of the application without affecting others.