Firebase Authentication

Firebase Authentication provides secure, scalable user authentication for your applications, supporting various methods from email/password to federated providers like Google and Facebook.

Firebase Authentication streamlines user identity management for your apps. It offers ready-to-use SDKs and UI libraries, allowing you to integrate robust authentication quickly across platforms (web, iOS, Android). You can choose from multiple authentication methods: traditional email and password, phone numbers, or popular federated identity providers such as Google, Facebook, Twitter, and GitHub. This service is built on Google's secure infrastructure, handling user data and session management, so you can focus on your application's core features rather than authentication complexities. For example, implementing Google Sign-In takes just a few lines of code, providing a seamless experience for your users and reducing development time significantly.

https://firebase.google.com/docs/auth