Wayfast applications are created through projects.
A project contains a menu to organize and display your features, pages, security settings, Look & Feel assets and everything you need to turn your ideas into reality.
A solution is a container for organizing projects.
In a real-life situation as your development team grows in a fast development environment your code base can grow pretty quickly and you can end up having thousands of applications.
Solutions help you organize your work giving you the ability to create containers that keep related projects together. Containers can include folders so you can have one more logical level for organizing your apps.
For more information see: