How could I implement a navigation system in an application?

To implement navigation in an iOS application, UINavigationController is usually used, which manages a stack of view controllers (UIViewController).

Main approaches:

• UINavigationController — for hierarchical navigation, where the user moves forward and backward through screens.
• UITabBarController — for switching between multiple sections of the app.
• Storyboard Segues — visual linking of screens in Interface Builder.
• Programmatic navigation — creating and transitioning between controllers via code.

Example of programmatic transition to a new screen:

let detailVC = DetailViewController()
navigationController?.pushViewController(detailVC, animated: true)

For more complex scenarios, the Coordinator pattern can be used, which separates navigation logic from controllers.