!!! Overview
[{$pagename}] is defined in [RFC 8414] and defines defines a [metadata] format that an [OAuth 2.0] [client|OAuth Client] can use to obtain the information needed to interact with an [OAuth 2.0] [Authorization Server], including its [OAuth 2.0 Endpoint] locations and [Authorization Server] capabilities.


[{$pagename}] generalizes the [discovery mechanisms|Discovery Mechanism] defined by [OpenID Connect Discovery] 1.0 in a way that is compatible with [Openid-configuration], while being applicable to a wider set of [OAuth 2.0] use cases.  This is intentionally parallel to the way that the "[OAuth 2.0 Dynamic Client Registration Protocol]" ([RFC 7591]) specification generalized the dynamic client registration mechanisms defined by "[OpenID Connect Dynamic Client Registration 1.0|OpenID Connect Dynamic Client Registration]" [OpenID.Registration] in a way that was compatible with it.

The [metadata] for an [Authorization Server] is retrieved from a [well-known] location as a [JSON] [RFC 7159] document, which declares its endpoint locations and [Authorization Server] capabilities.

This [metadata] can either be communicated in a self-asserted fashion by the server origin via [HTTPS] or as a set of signed metadata values represented as claims in a [JSON Web Token] ([JWT]).  In the [JWT] case, the issuer is vouching for the validity of the data about the [Authorization Server].  This is analogous to the role that the Software Statement plays in [OAuth Dynamic Client Registration Metadata] [RFC 7591].

The means by which the [OAuth Client] chooses an [Authorization Server] is out of scope in [{$pagename}].  In some cases, its issuer identifier may be manually configured into the client.  In other cases, it may be dynamically discovered, for instance, through the use of [WebFinger] [RFC 7033], as described in Section 2 of "OpenID Connect Discovery 1.0" [OpenID.Discovery].


[{$pagename}] ([RFC 8414]) creates a [IANA Registry] which is part of the [OAuth Parameters Registry] and is located at: \\
[https://www.iana.org/assignments/oauth-parameters/oauth-parameters.xhtml#authorization-server-metadata|https://www.iana.org/assignments/oauth-parameters/oauth-parameters.xhtml#authorization-server-metadata|target='_blank']



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