What are some scenarios for using the MVVM framework in iOS?

In iOS, the MVVM (Model-View-ViewModel) framework can be applied to the following scenarios:

1. Complicated user interface: The MVVM framework can help separate the logic and state of the user interface from the view, making the interface clearer and easier to maintain.
2. A data-driven interface: The MVVM framework can automatically update the interface by binding the model to the view through a data binding mechanism.
3. Collaborative development: The MVVM framework decouples the business logic from the view, making collaborative development more convenient as each developer can independently work on and test different modules.
4. Testability: The MVVM framework makes it easier to test the interface because the view logic and business logic are separated and can be tested separately.
5. Data caching and persistence: The MVVM framework allows for easy management of storing data locally or on a remote server, and enables real-time view updates through a data binding mechanism.

In conclusion, the MVVM framework in iOS development can enhance code maintainability, testability, and assist developers in better organizing and managing interface logic and state.