Adding users to Auth0 from Lambda

Hi,
I came across a method to call an Auth0 endpoint whenever a new user is added to our application database so that the new user can obtain a JWT token when she logs in.
Is this procedure common ? What about bulk additions ? Users are first registered with the application.
Am I missing something ?

Thanks,
Mohan

Hi @radhakrishnan.mohan,

Can you provide some more information? I am having a hard time following the flow you are describing. Is there an example you could share?