Firebase is a Backend-as-a-Service (BaaS) app development platform that provides hosted backend services such as a realtime database, cloud storage, authentication, crash reporting, machine learning, remote configuration, and hosting for your static files.

Firebase supports Flutter. To learn more, check out the following resources.

• Getting started with Firebase and Flutter
• Firebase plugins

Use Firebase to host your Flutter app on the web

Get to know Firebase for Flutter

• tutorial
• video workshop

The Flutter community created the following useful resources.

Building chat app with Flutter and Firebase

• Using Firestore as a backend to your Flutter app
• Live Coding Firebase Authentication with Flutter
• Flutter & Firebase Auth 01
• Flutter: Firebase Tutorial Part 1 - Auth and Sign in