!!! Overview
[{$pagename}] is when an [Authentication Method] is used by more than one [Resource Server] in a series.

So [Resource Owner] is [Authenticated] or uses [Delegation] access to "[Resource Server] One".

"[Resource Server] One" then needs, to fulfill the request, needs to access "[Resource Server] Two". 

Can the "[Resource Server] Two" determine the "[Resource Server] One" is performing access for the [Resource Owner]? This is referred to as the [Confused Deputy Problem].

!! [OpenID Connect] and [OAuth 2.0]
[OAuth 2.0 Token Exchange] solves the [{$pagename}] issue.

!! More Information
There might be more information for this subject on one of the following:
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