OAuth is an authentication method that uses codes and tokens to authorize access without sharing credentials. There have been two phases of the open-standard authentication method and the industry has adopted OAuth 2.0 (which is backwards compatible). The days of sharing credentials with a user name and password are over. Google, GitHub, Vimeo, QuickBooks Online, Sage One, and many more sites on the web are using this standard. So let's learn more about it...
