In this chapter, we learned a lot of different concepts related to the development environment. We saw how developers manage to work with the same environment and how they reduce the differences between them as much as possible by using virtual machines. Also, we learned how to use a powerful tool called Vagrant, combined with VirtualBox and Chef, to build a development environment. This environment will be used throughout this book to build our awesome social network and now your machine is ready to go.

In the next chapter, we will start reviewing the main components of the framework, how they interact to fulfill a request, and also the specific details of each one with their possible configurations.