Easily sign up, sign in, and authorize your users with Google's identity services. Use Google's SDKs to help protect your users and their data, all while accelerating growth. Focus on what matters most – building great apps.

Secure authentication made easy

Provide fast, safe, and easy authentication experiences to sign up and sign in your users across platforms. Use these offerings together to upgrade your app by improving user security, reducing support costs, and increasing user conversion.
Provide secure, one-click sign up and sign in for your app using the user's Google account.
Fast, secure sign-in using fingerprint-, face- or device-lock based on industry standards.
Declare signed relationships between your apps and your website.

Connect your app to Google services across platforms

Empower users to authorize access Google services in your app with their Google Account. Our platform offers secure, intuitive authorization flows that prioritize data privacy while enabling seamless integration with Google's ecosystem.
Securely integrate Google data into your applications across platforms with OAuth 2.0.
Enable secure, user-granted access by Google to data in your application with OAuth 2.0
Google Identity provides native APIs for managing authentication and authorization. If you're building on Firebase or Google Cloud, you might also consider these solutions
Firebase Authentication makes building secure authentication easy. With just a few lines of code, you can set up and manage sign-in for your users on all their devices. It provides backend services to securely authenticate users, paired with easy-to-use client SDKs for mobile, web, and games. It supports authentication using passwords, phone numbers, popular federated identity providers like Google, Facebook, Twitter, and more.
Identity Platform is a customer identity and access management (CIAM) platform that helps organizations add identity and access management functionality to their applications, protect user accounts, and scale with confidence on Google Cloud.