How do you implement interaction between modules in an application consisting of multiple modules?

In applications with multiple modules, interaction can be implemented in several ways:

• Using interfaces and abstractions: each module provides interfaces that others can use without knowing implementation details.
• Event-driven architecture: modules exchange events via an event bus or observer pattern.
• Dependency Injection (DI): dependencies are injected from an external container, simplifying interaction and testing.
• Using shared data models and DTOs: for data transfer between modules.

For example, in Android, architectural components like ViewModel and LiveData can be used so that one module publishes data and another subscribes to changes.