OAuth is an open-standard framework or authorization protocol that explains how unconnected servers and services can securely permit authorised access to their assets without actually disclosing the initial, associated, single logon credential.

1. OAuth Authentication: An Introduction and Its Advantages
The open-standard authorization framework or protocol known as OAuth explains how
unconnected servers and services can securely permit authorised access to their
resources without actually disclosing the initial, associated, single logon credential.