Introduction to Firebase Authentication

Firebase Authentication identifies and verifies users of an application. This creates personalized experiences for users across all devices. This is made possible through easy-to-use SDKs and ready-made UI libraries that Firebase provides to authenticate users.

Firebase Authentication uses JSON Web Tokens (JWTs) to authenticate users. It also supports authentication mechanisms like email/password and email/link combinations. It also allows phone number authentication, and social logins with popular federated identity providers like ...