What is Amazon Cognito?
What is Auth0?
Want advice about which of these to choose?Ask the StackShare community!
What are the cons of using Amazon Cognito?
What tools integrate with Amazon Cognito?
Auth0 seems like the most viable way to have full-fledged user management in AWS without too much hassle. Aside of being paid, it offers many advantages, such as social network logins or handy administration interface.
Authentication as a service. Instead of rolling our own user authentication flow for yet another time, it's better to leave the security concern to a service specialized in this field.