What is SSO (Single Sign-On)?
A system that lets users log in once and access multiple applications without signing in again.
Why It Matters
SSO improves user experience by eliminating multiple logins and centralises security management.
Real-World Example
Logging into your company's portal once and then accessing email, chat, and project tools without re-entering credentials.
“Understanding terms like SSO (Single Sign-On) matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
OAuth
A standard that lets you log into apps using your existing accounts from Google, Facebook, or other providers
SAML
An XML-based standard for exchanging authentication data between an identity provider and an application.
OpenID Connect
A modern authentication standard built on top of OAuth that verifies user identity.
Authentication
The process of verifying who someone is, usually through a username and password
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Related Terms
Authentication
The process of verifying who someone is, usually through a username and password
OAuth
A standard that lets you log into apps using your existing accounts from Google, Facebook, or other providers
SAML
An XML-based standard for exchanging authentication data between an identity provider and an application.
OpenID Connect
A modern authentication standard built on top of OAuth that verifies user identity.
Authorisation
Determining what actions or data a verified user is allowed to access
JWT (JSON Web Token)
A secure digital pass that proves who you are without needing to check the database every time