Various embodiments of systems and methods for improved user interface framework for Web applications are described herein. The UI framework is based on the MVC architectural pattern. An additional controller, a server controller, is included in the server part of the user interface framework runtime. A client controller is running at the client side of the user interface framework runtime. The client controller and the server controller form one logical synchronized controller. The server controller ensures that all needed controller calculations, which would lead to additional roundtrips between the client side and the server side, can be done on the server side. Thus, exact one roundtrip between client side and backend for every user interaction and transporting only the bare minimum of data needed to render the current UI state is achieved.