Google has added support for OAuth for Google Apps, replacing a less secure system for developers. OAuth is an open standard that allows third-party software to request access rights and act on behalf of a user. Facebook, Salesforce.com, Microsoft Azure, Twitter, and now Google are among the large players that have adopted OAuth. The decentralized identity management system is especially useful for websites that see large levels of third party traffic. But going forward, OAuth 2.0 may need work.”]
Source: https://www.darkreading.com/attacks-breaches/google-embraces-oauth-authentication-for-apps