# The Bridge > The all-in-one developer platform for authentication, payments, subscriptions, and feature flags on one user model. Add login, social auth, passkeys, SSO, and multi-tenant user management in minutes, then bill and gate features on the same user object. ## Identity & Authentication - [SaaS Authentication guide (hub)](https://thebridge.dev/identity): how authentication, SSO, passkeys, MFA, multi-tenancy, and RBAC fit together for a SaaS app. - [Implement Passkeys (WebAuthn)](https://thebridge.dev/identity/implement-passkeys): add passwordless passkey sign-in, with fallbacks. - [Add Google Login](https://thebridge.dev/identity/google-login): Google OAuth sign-in without handling the handshake yourself. - [Add GitHub Login](https://thebridge.dev/identity/github-login): GitHub OAuth sign-in for developer tools and SaaS. - [Add Microsoft / Entra ID SSO](https://thebridge.dev/identity/microsoft-sso): let employees sign in with Microsoft work accounts. - [Add Magic Link Login](https://thebridge.dev/identity/magic-link-login): passwordless email sign-in. - [SAML 2.0 SSO for B2B SaaS](https://thebridge.dev/identity/saml-sso): connect Okta, Entra ID, and any SAML identity provider, no SSO tax. ## Company - [Pricing](https://thebridge.dev/pricing) - [Docs](https://thebridge.dev/docs)