These slides have been presented at Eclipse Summit Europe 2010. This talk will show how Eclipse Modeling technologies could be used to design JavaEE applications. It will be illustrated by: * EMF to design a DSL for WebApp, * GMF to design screens, services, entities, enterprise architectures * Acceleo to generate to Spring, Struts, Hibernate and others * ATL to import UML/Togaf models The story of a travel agency is used as an exemple. It show how to create a simple DSL, how to create my own graphical workbench with Obeo Designer, and how to integrate this application inside a Togaf compatible architecture. It will show how WTP and EMP fit well together for developers, architects and designers. It will also prove with the same model how easy are the evolution management with the updating of a generator to target a new JavaEE framework.