Symfony has grown a lot since its inception. Between 2.0 and the current release over 25 components were added to Symfony. In our talk we want to take a look at these components, group them into layers and then discuss common principles for components in these layers. At the heart of this discussion are package design principles.

This knowledge will not only help you better understand how Symfony is built and how to use these components standalone (or possibly not), it will also help you design better applications and libraries yourself.