Pipelining API calls using Azure APIM Policies

Question

I'm somewhat new to Azure APIM and am trying to figure out solution to a scenario which I've be tasked to solve using APIM Policies. Here's how the workflow is supposed to work:

1. System A makes a REST call to the APIM gateway.
2. This triggers APIM to call REST API endpoint B to a get value x.
3. Finally, APIM needs to relay the original call received from system A to system C such that the header information from the System A's call and value x from endpoint B's call are included.

Thus, is there a way to accomplish this using only a combination of Azure APIM policies?

Thanks,

Answer 1

1 & 2. You can connect System A to System B via Azure APIM gateway. You can connect APIM with system B as steps suggested in answer : Azure Api management for connecting to application After connection, the REST API URL will be ready which you can call from system A and setup connection.

3.All the parameters (headers/payload) sent to API by calling service (System A) will be passed to System B as it is unless you make changes.