This session gives you an insight of our migration to lollipop. The application shouldn't only used from Lollipop onwards. So we had to be downward compatible. I show you how to use the app-compat support library as well RecyclerView and CardView. It also contains some technics/ workarounds so we accomplish nearly the same look and feel of the application in different api levels. This talk doesn't go deep into animation, with is also a large part of Material. This session aims developers, who have already an application and for the ones, who want to create downward compatible ones.