https://www.youtube.com/watch?v=vr1njQyqlbk
https://www.youtube.com/watch?v=TowcW1aTDqE
https://www.youtube.com/watch?v=KWjgiNgDfwI
https://medium.freecodecamp.org/user-management-with-aws-cognito-1-3-initial-setup-a1a692a657b3
https://medium.freecodecamp.org/user-management-with-aws-cognito-2-3-the-core-functionality-ec15849618a4
https://medium.freecodecamp.org/user-management-with-aws-cognito-3-3-last-steps-to-full-fledged-73f4a3a9f05e
https://lugassy.net/developing-100m-users-app-from-your-basement-use-amazon-cognito-52dcc261a7c1
JWT
https://www.youtube.com/watch?v=ruo-1XT9xVU
https://medium.com/aws-activate-startup-blog/amazon-cognito-mobile-apps-part1-user-identity-and-simple-aws-authentication-afe7c4486b35
https://serverless-stack.com/chapters/create-a-cognito-user-pool.html
https://developers.onelogin.com/saml
https://auth0.com/
https://developers.onelogin.com/api-docs/1/getting-started/dev-overview