Learn how to create an access-token based Cognito Authorizer in API Gateway. The default Cognito Authorizers are ID token based.
Learn how to add a new Cognito user to DynamoDB (using lambda as the intermediary) as soon as the user’s sign up is confirmed.
Learn how to delete users from Cognito using lambda functions in two ways: admin_delete_user and delete_user. Also see how the two methods compare.