Single Sign-On

SSO

SSO allows users to authenticate once and gain access to multiple applications and systems without re-entering credentials for each one — reducing password fatigue and improving security.

IAM Authentication Foundational

❓ What is Single Sign-On?

SSO allows users to authenticate once and gain access to multiple applications and systems without re-entering credentials for each one — reducing password fatigue and improving security.

⚙️ How Does It Work?

After authenticating with the IdP, the user receives a session token. When accessing other apps, the SP validates the session with the IdP via SAML or OIDC without prompting for credentials again.

📍 Where Is It Used?

Enterprise environments with multiple SaaS applications, employee portals, B2B partner access, healthcare workflows.

💡 Real-World Example

Before SSO: an employee manages 15 separate passwords for 15 apps. After Okta SSO: one strong password plus MFA unlocks all 15 apps. Password reuse risk is eliminated and helpdesk password reset tickets drop 65%.

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