I can setup you a fully and functionally working authentication setup for your web app via amazon cognition in AWS. In cognito, you can easily manage your users which is most important for any auth methods. I can also assist you in setting up multi-factor authentication, user pools, and identity pools to provide a secure and seamless user experience. With Amazon Cognito, you can also integrate with social identity providers like Google, Facebook, and Amazon, making it easier for your users to sign in.