Federated Login for custom UI for Cognito user pool

Question

Hi,
Thanks for having a look on my query.
I am going through the AWS documents to understand the implementation of federated identities login through user  pool. I have a custom UI as I don't intend to use the Cognito build hosted Web UI.
I am still not sure if Cognito allows hooking a custom UI to allow logins from third party IDPs and add users to user pool along with copying some attributes.
Any pointers in this direction would be appreciated !

Answer

Hello,
         Yes there is a way to do this.

You can  develop your own web client using Amplify Authentication module

Please see the following links as a reference

https://aws-amplify.github.io/docs/js/authentication

https://blog.kylegalbraith.com/2018/11/29/how-to-easily-customize-the-aws-amplify-authentication-ui/

https://spin.atomicobject.com/2021/11/02/bypass-cognito-hosted-ui/

You can also use Cognito as a service provider and have your IDP serve a custom UI. In this scenario Amazon Cognito will redirect the user to your IDP. Please see the following URL

https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-SAML-session-initiation.html. You can configure your federation to be SP initiated (Service Provider initiated) inside your federation product.

Federated Login for custom UI for Cognito user pool

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