What Does SSO Actually Mean?

Single sign-on (SSO) is an authentication method that lets users access multiple applications with one account rather than maintaining separate usernames and passwords for each service. Common examples include choosing “Continue with Google” or Facebook when signing into another product; in a typical flow, the identity provider requests the user’s consent, returns a token to the application, and the application uses that token to retrieve approved information such as a name or email address. Subsequent logins can often proceed without renewed consent, making access faster and more convenient. SSO can also improve security by reducing password burden and making it easier for users to adopt additional protections, although enterprise implementations commonly use an organization’s internal identity provider instead of external OAuth providers such as Google or Facebook.

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