What role does each element play in the MVVM architecture?

In MVVM (Model-View-ViewModel) architecture, each element performs its role:

• Model — contains the business logic and data of the application. Responsible for working with data, retrieving, storing, and processing it. It is independent of the UI.

• View — responsible for displaying data to the user and interacting with them. These are UI components that show information and accept user input.

• ViewModel — acts as an intermediary between the Model and the View. Processes data from the model into a form suitable for display and reacts to user actions by updating the model. The ViewModel does not know about specific UI elements but provides data and commands for the View.

Thus, MVVM separates responsibilities, making code maintenance and testing easier.