What Is SSO?

SSO in plain language

Single sign-on lets a user authenticate with one identity provider and access multiple applications without separate passwords for each app.

Why teams use it

SSO can reduce password fatigue, centralize access controls, and make onboarding or offboarding easier. It also moves important login behavior into an identity system that must be configured carefully.

What testers should check

Test login success, login failure, logout, session timeout, role mapping, disabled users, new users, and behavior across browsers. Authentication bugs often appear around edges, not the happy path.

Keep examples generic

When documenting SSO testing, avoid exposing internal provider details, private screenshots, or customer-specific configurations.