Simple definition
A unique authentication that allows access to multiple services without re-entering your password each time.
Technical definition
Single Sign-On is based on an identity authority that provides recognized tickets or chips for multiple applications.
What is it used for ?
Reduce password input and centralize authentication.
Practical example
After connection to Microsoft 365, the user can access several compatible services without new full authentication.
Common issues
- Session compromised giving access to several services
- Bad federation
- Application not supporting the identity provider
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.