Advanced – Security Testing
Single Sign-On (SSO) – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
An authentication scheme allowing users to log in once and access multiple applications with the same credentials.
In simple words
Log in once, use many apps.
Exam tip
SSO commonly uses SAML or OIDC — test session expiry, logout propagation, and IdP failure modes.
Related terms
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