Where's the documentation about Cognito User Pools as Open ID Connect (OIDC) providers by themselves?

Question

Official Cognito documentation says a lot about how to federate other OIDC providers in a user User Pool, but I cannot find proper documentation explaining how to use the User Pool as an OIDC provider by itself. This is for scenarios where Clients will authenticate against the Cognito User Pool with the OIDC protocol without involving any other Identity Providers.

It seems to be compatible, for the following endpoint exists:
`https://cognito-idp..amazonaws.com//.well-known/openid-configuration`

Where's the documentation for that?

I can only find third-party articles about this, but no proper documentation from AWS.

Accepted Answer

Hi,

Here is the documentation for [cognito oauth2 endpoints](https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-userpools-server-contract-reference.html), [this blog post](https://aws.amazon.com/blogs/mobile/understanding-amazon-cognito-user-pool-oauth-2-0-grants/) also describes the supported oauth2 flows with Cognito and [this recording](https://www.youtube.com/watch?v=WgvVxKf2CFc) has a basic demo of creating an OpenID provider with Cognito and testing the basic flows from Postman.

Where's the documentation about Cognito User Pools as Open ID Connect (OIDC) providers by themselves?

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