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The MVC Framework supports organizing a web application into areas, where each area represents a functional segment of the application, such as administration, billing, customer support, and so on. This is useful in a large project, where having a single set of folders for all of the controllers, views, and models can become difficult to manage.
Each MVC area is has its own folder structure, allowing you to keep everything separate. This makes it more obvious which project elements relate to each functional area of the application. This helps multiple developers to work on the project without colliding with one another.