Firebase is your server , your API and your datastore, all written so generically that you can modify it to suit most needs. Yeah, you’ll occasionally need to use other bits of the Google Cloud for your advanced applications.
Read moreWhat is Firebase serve?
When testing locally, Firebase serves your web app at a locally hosted URL . Hosting is part of the Firebase Local Emulator Suite, which enables your app to interact with your emulated Hosting content and config, as well as optionally your emulated project resources (functions, databases, and rules).
Read more