Web Dynpro Application
A Web Dynpro application is an application that can be called from the user interface. As an independent program unit it connects a URL that can be accessed by the user with a window in the Web Dynpro component.

The Web Dynpro application is merely linked to an interface view of a Web Dynpro window by an inbound plug that has the Startup attribute. It therefore contains no information whatsoever about the elements of the corresponding component or components behind the interface view.