What is the advantage of the MVVM architectural model compared to MVC in terms of performance?

The MVVM (Model-View-ViewModel) architectural pattern differs from MVC (Model-View-Controller) in that the ViewModel provides two-way binding between the model and the view, often using data binding mechanisms.

From a performance perspective, the advantages of MVVM are as follows:

• Reduced load on the controller: In MVC, the controller often handles UI updates and logic processing, which can create bottlenecks.
• Automatic UI updates: MVVM allows the view to be automatically updated when data changes without manually writing update code, reducing errors and increasing responsiveness.
• Better separation of concerns: The ViewModel handles the presentation logic, which simplifies testing and maintenance.

In iOS, this can mean that when using MVVM with binding (for example, through Combine or RxSwift), the UI updates only when there are actual data changes, reducing unnecessary redraws and improving application performance.