This reference describes the Google 3P Authorization JavaScript Library API,| Google for Developers
Setting up OAuth 2.0| Google for Developers
To add a Sign In With Google button or One Tap and Automatic sign-in| Google for Developers
This document explains how web server applications use Google API Client Libraries or Google| Google for Developers
The OAuth 2.0 authorization framework enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf. This specification replaces and obsoletes the OAuth 1.0 protocol described in RFC 5849. [STANDARDS-TRACK]| IETF Datatracker