single sign-on
nounUK /ˌsɪŋɡl ˈsaɪn ɒn/
US /ˌsɪŋɡl ˈsaɪn ɑːn/
A way to log in once and then use many apps without logging in again.
With single sign-on, she logged in once and could open her email, calendar, and files.
OTHER MEANINGS
2. A system that lets one set of credentials unlock several connected services.
The company rolled out single sign-on so staff could reach all internal tools with one password.
3. A feature that reduces repeated password prompts across websites or apps.
Single sign-on saved him from typing his password every time he switched apps.
4. A security setup where a central service confirms who you are for other services.
The school's single sign-on service verified her identity before opening the student portal.