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Authentication & Authorization — JWT & OAuth 2.0

One-liner: Authentication proves who you are ; Authorization proves what you're allowed to do . JWT and OAuth 2.0 are the industry standards for doing both at scale.

  • JSON Web Tokens (JWT) verify user identity via self-contained, signed tokens.
  • OAuth 2.0 enables third-party access without sharing passwords via Authorization Code Flow.
  • JWTs are stateless and easier to revoke, while OAuth 2.0 offers granular permissions for SSO.

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