Google Workspace

Google Workspace is a collection of identity and access management tools. It allows companies to allocate and manage user accounts efficiently, enforce multi-factor authentication, enable single sign-on and OAuth 2.0, and govern access to applications and services under one platform.

Google Workspace offers two types of Single Sign-on (SSO) methods:

OpenID Connect: This open authentication protocol works on top of the Open Authorization (OAuth) 2.0 framework
Security Assertion Markup Language (SAML): This is an open standard for exchanging authentication and authorization data between an identity provider and a service provider