In this chapter, we talked about two advanced features of Firebase: Firebase Cloud Messaging and Firebase Cloud Functions. Using these two features, you can develop a highly interactive serverless app.

FCM is a messaging platform for reliable message delivery of downstream and upstream messages. We also discussed different message types and saw when to use one over another. To have practical experience on FCM, we enhanced our Helpdesk application to send and receive notifications.

We also spoke about Firebase Cloud Functions and saw how it helps to have a serverless app. We covered how to develop a cloud function and deploy it on the server. We also explored the different types of triggers, such as Realtime database triggers, HTTP triggers, Cloud Firestore triggers, Cloud Storage Triggers, and Auth triggers.

In the next chapter, we will cover other advanced and interesting features, such as Firebase Cloud Storage and integration of Firebase application with Google Cloud.