🔐 Single Sign-On (SSO) — One Login, Multiple Services Single Sign-On lets users authenticate once and securely access multiple applications without logging in again and again. Here’s how the SSO flow works in practice: • User requests access to an application (Service Provider A) • The app redirects the user to an Identity Provider (IdP) • IdP prompts the user to sign in • User provides credentials once • IdP verifies credentials securely • A signed token is issued and sent back • Access is gra

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