IntermediatePhone
2 min

OAuth2 vs SAML

AuthenticationSecuritySSO
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Interview Question

Compare OAuth2 and SAML for authentication and authorization scenarios.

Key Points to Cover
  • OAuth2: token-based, modern, JSON/REST, widely used for APIs
  • SAML: XML-based, older, suited for enterprise SSO between orgs
  • OAuth2 ≠ authentication; OpenID Connect extends OAuth2 for login
Evaluation Rubric
Explains OAuth2 concepts34% weight
Explains SAML usage33% weight
Distinguishes scenarios correctly33% weight
Hints
  • 💡OIDC vs OAuth2 can be a follow-up here.
Potential Follow-up Questions
  • When is SAML still preferred?
  • How do refresh tokens work in OAuth2?
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