OAuth arose out of the process of improving the OpenID standard at the Internet Engineering Task Force (IETF) to solve the problem of secure access to multiple systems on behalf of a single client. This paper illustrates how OAuth works using simple use cases. It delves into the history of OAuth and contrasts it to OpenID, a comparable but different method commonly used for authentication. Then, this paper takes a look at a more complex enterprise use case and discusses how an API management solution can help facilitate the effective use of OAuth in the context of corporate computing.
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