9. UI Application Logic Out of the box approach View ViewModel Model Model-View-ViewModel (MVVM)

10. View ViewModel Services Model

11. View ViewModel Services Model Platform- specific functionality

13. Portable/Common Platform specific View ViewModel Services Model Platform- specific functionality Service Implementation Platform specific Portable/Common

23. http://microsoft.com/msdn www.microsoft.com/learning http://channel9.msdn.com/Events/TechEd http://microsoft.com/technet