I have some functionalities on a backend service “abc” running which returns me data on https://apigateway/abc?id=1, I want to get this data through payload cms whenever i hit an api https://payloadcms/?id=1 from my ui.
Is this possible?

so far being new to headless cms, i understood that payload cms creates mongodb collections and apis based on folder structure, which returns data from payloads mongodb. i want to be able to use both payloads data & apis and my old backend service’s data & api