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SAML 2.0 — Single Sign-On

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SAML: federated identity across organizations

SAML 2.0 (Security Assertion Markup Language) lets an Identity Provider (IdP) — like Okta, Azure AD, or Google Workspace — vouch for users to many Service Providers (SPs) without the SPs needing to store passwords.

The IdP authenticates once; SPs trust signed XML assertions. One login → access everywhere.

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