How to transfer data from callback server to frontend webapp?

Step 1:- Our Frontend will make a call to our wrapper API.
Step 2:- Our Backend will make a call to ABDM Gateway.
Step 3:- ABDM Gateway will make a call to our backend on /callback (Response data will be received by over backend in step 3)
Step 4:- To transfer the data from the backend to the frontend (Here we are facing an issue in transferring the data from the backend to the frontend application)

Please suggest us some effective way of doing this.

@IntegrationSupport
@Sachin

@akashgodre28 Please check these webinars : https://www.youtube.com/watch?v=0iNAfGk0wII
https://www.youtube.com/watch?v=rSir2gbkEmk

Hi @akashgodre28, As discussed during our call, Rest APIs are the best way to implement this. Ensure you do proper configuration and follow the security protocols & other health standards.
Thanks