What is the need for applying design patterns in the presentation layer?

Design patterns in the presentation layer help structure the code, making it more maintainable and testable. They divide responsibilities among components, for example, separating display logic from business logic and data management. This facilitates code maintenance and reuse.

For example, the MVP (Model-View-Presenter) pattern allows:

• The View to be responsible only for display and user interaction.
• The Presenter to handle logic and interact with the model.
• The Model to contain data and business logic.

This approach reduces component coupling and simplifies testing of the presentation layer.