What led you to choose the MVVM architectural pattern for development?

MVVM (Model-View-ViewModel) is chosen for its ability to clearly separate responsibilities between application layers. This simplifies maintenance and testing of the code, as the ViewModel contains presentation logic and is independent of the UI, while the View is only responsible for display.

This pattern is well-suited for iOS, especially with SwiftUI or Combine, where data can be easily bound between the View and ViewModel.

Example of using MVVM in iOS with SwiftUI:

class UserViewModel: ObservableObject {
    @Published var username: String = ""

    func fetchUser() {
        // load user data
        self.username = "Ivan Ivanov"
    }
}

struct UserView: View {
    @ObservedObject var viewModel = UserViewModel()

    var body: some View {
        Text(viewModel.username)
            .onAppear {
                viewModel.fetchUser()
            }
    }
}