This is a professional layout for Unity. This layout allows you to modify your project and watch the scene change in real-time. That is because you can view both windows by placing the game window under the scene window. This layout also makes it possible to view more than one folder in the projects window by having the folders expand. Having the project window under the hierarchy also allows you to add game objects to the scene more efficiently. This is a great loadout to maximize your workflow in Unity.