1. Determine the routing strategy based on application requirements (simple navigation, declarative routing, or nested navigation).
2. Implement basic imperative navigation using `Navigator.push` and `Navigator.pop` if applicable.
3. Implement data passing between screens using constructor arguments or `RouteSettings`.
4. Implement named routes if required, configuring `MaterialApp` with `initialRoute` and `routes` or `onGenerateRoute`.
5. Implement nested navigation with a new `Navigator` widget and a `GlobalKey<NavigatorState>` for sub-flows.
6. Validate the implemented routing logic to ensure stability and handle potential errors.