In this chapter, we talked about different types of persistence mechanisms, for example, RDBMS and NoSql (document, key-value, and graph) stores, and also looked at Firebase. Then, we talked about the benefits Firebase has to offer and saw different use cases where Firebase can be used. We also read about AngularFire, which is the officially supported Angular binding for Firebase.

In the next chapter, we'll see how to use AngularFire in our Angular applications.