Can you explain the advantages and disadvantages of the MVVM architectural pattern?

MVVM (Model-View-ViewModel) is an architectural pattern that separates presentation logic from business logic, improving testability and maintainability.

Advantages:

• Clear separation of responsibilities: View handles only display, ViewModel handles logic and state.
• Improved testability: ViewModel can be tested without UI.
• Two-way data binding simplifies synchronization between UI and data.
• Enhances code reusability, especially ViewModel.

Disadvantages:

• Complexity: for simple screens, the pattern may be overkill.
• Data binding setup can complicate debugging.
• Potential memory leaks if references between View and ViewModel are not managed properly.

In iOS, MVVM is often implemented using Combine or RxSwift for reactive data binding.