AIAPIDate & TimeImageJSONMathNext.jsSecuritySEOTextDesignDatabase
All ToolsWorkspacesWorkflowsLearnError EncyclopediaAboutPrivacyTermsContactEmail

© 2026 Web Util Slyce. All tools run client-side — your data stays private.

OAuth 2.0 vs SAML: Authentication Protocol Comparison

Compare OAuth 2.0 and SAML for authentication and authorization. Learn which protocol fits your identity management and single sign-on needs.

Item 1

OAuth 2.0

OAuth 2.0 is an authorization framework that enables third-party applications to obtain limited access to user accounts. It uses tokens and is the modern standard for API authorization.

Try it free
  • Modern token-based authorization standard
  • Fine-grained scopes for access control
  • Widely used by major platforms (Google, GitHub, Facebook)
  • Designed for mobile, web, and IoT
  • Refresh tokens for long-lived access
Item 2

SAML

SAML (Security Assertion Markup Language) is an XML-based single sign-on protocol for exchanging authentication and authorization data between identity providers and service providers.

Try it free
  • Mature enterprise SSO standard (2005+)
  • XML-based with signed assertions
  • Single logout across all services
  • Strong identity provider federation
  • Deep integration with enterprise directories (AD, LDAP)

Side-by-Side Comparison

AspectOAuth 2.0SAMLWinner
Protocol typeAuthorization framework with tokensAuthentication and SSO with XML assertionsDraw
Token formatJSON (JWT) — compact and web-friendlyXML (SAML assertions) — verboseOAuth 2.0
Mobile supportExcellent — designed for mobile and APIsPoor — designed for browser-based SSOOAuth 2.0
Enterprise adoptionConsumer and SaaS platformsEnterprise SSO and identity federationSAML
Single logoutLimited — requires custom implementationBuilt-in single logout across providersSAML

Verdict

Use OAuth 2.0 for modern applications, mobile apps, APIs, and consumer-facing authentication. Use SAML for enterprise single sign-on, especially when integrating with Active Directory, legacy systems, or government applications.

Recommended: OAuth 2.0 for modern apps, SAML for enterprise

Frequently Asked Questions

Is OAuth 2.0 an authentication protocol?

OAuth 2.0 is primarily an authorization framework. For authentication, use OpenID Connect (OIDC), which is built on top of OAuth 2.0 to add identity verification.

Can OAuth 2.0 and SAML work together?

Yes. Many identity providers support both. SAML can be used for initial SSO authentication, while OAuth 2.0 handles API authorization in the same system.