Looking for logging into the Facebook Federated site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Facebook Federated site. After that you can login as usual with your login credentials.
https://websauna.org/docs/tutorials/gettingstarted/tutorial_12.html
https://developers.facebook.com/docs/facebook-login/security/
https://developers.facebook.com/docs/facebook-login/multiple-providers/
https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/loading-browser-credentials-federated-id.html
https://docs.aws.amazon.com/cognito/latest/developerguide/facebook.html
https://aws.amazon.com/blogs/aws/aws-iam-now-supports-amazon-facebook-and-google-identity-federation/
https://en.wikipedia.org/wiki/Federated_identity
https://developers.google.com/identity/toolkit/web/federated-login
https://github.com/aws-amplify/amplify-js/issues/311
https://medium.com/@myyk/serverless-authenticated-applications-with-federated-fb-google-amazon-logins-7447ac0b8415
https://hackernoon.com/federated-identities-a-developers-primer-655a160d66cb
https://security.stackexchange.com/questions/13803/what-is-the-difference-between-federated-login-and-single-sign-on
https://aws-amplify.github.io/docs/js/federated-identity