### Secure and grow your apps with Google Identity

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.

[Get started now](https://developers.google.com/identity/siwg)

### [Sign in with Google](https://developers.google.com/identity/siwg)

Provide secure, one-click sign up and sign in for your app using the user's Google Account.

[Learn more](https://developers.google.com/identity/siwg)

### [Passkeys](https://developers.google.com/identity/passkeys)

Fast, secure sign-in using fingerprint-, face- or device-lock based on industry standards.

[Learn more](https://developers.google.com/identity/passkeys)

### [Credential sharing](https://developers.google.com/identity/credential-sharing)

Declare signed relationships between your apps and your website.

[Learn more](https://developers.google.com/identity/credential-sharing)

### [Account Authorization](https://developers.google.com/identity/protocols/oauth2)

Securely integrate Google data into your applications across platforms with OAuth 2.0.

[Learn more](https://developers.google.com/identity/protocols/oauth2)

### [Account Linking](https://developers.google.com/identity/account-linking)

Enable secure, user-granted access by Google to data in your application with OAuth 2.0

[Learn more](https://developers.google.com/identity/account-linking)

### [Identity for Android arrow_right_alt](https://developers.android.com/identity)

### [Identity for Web arrow_right_alt](https://developer.chrome.com/docs/identity)

### [Identity for iOS arrow_right_alt](https://developers.google.com/identity/sign-in/ios/start-integrating)

### [Firebase Authentication](https://firebase.google.com/docs/auth/)

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.

[Learn more](https://firebase.google.com/docs/auth/)

### [Google Cloud Identity Platform](https://cloud.google.com/security/products/identity-platform)

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.

[Learn more](https://cloud.google.com/security/products/identity-platform)