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This article is intended as a beginner level article for people that want to learn how to use OAuth2 in their web applications natively.
There is an accompanying video/demo that may be helpful here:
and you can reproduce this locally with the Open Exchange application attached.
OAuth2 as a native authentication type for web applications
OAuth (Open Authorization) 2.0 is a standard way to let one application call another application’s API without sharing a username and password.