SSO

Single Sign On

SSO standards

SAML

• Security Assertion Markup Language
• It is an open standard for exchanging authentication and authorization data between parties, in particaular, between an identity provider and a service provider.
• Use Case: Enterprise SSO

OAuth2

• Open standard for authorization
• Use Case: Grant websites or application access to their information on other websites, but wihout giving them the passwords. Additionally it is used for authorization and SSO.

OIDC

• OpenID Connect
• It is an identity layer built on top of the OAuth 2.0 framework and provides authentication.
• Use Case: Consumer SSO