Referral invites with Amazon Cognito

Question

Building an mobile application and it is heavily dependent on referral codes/invites on the first few months

We are using aws cognito for all user signin/up processes. What would be the best way to implement referral codes/invites (Same as uber/lyft etc) with aws cognito? Or scrap cognito and use firebase because it contains both user functions as well as dynamic links

Answer 1

You can add a pre sign up lambda function. This will allow you to validate during the sign up of a user that they have a valid referral link.