Can one model service call another model service

Thinking in terms of microservices, a composite controller service orchestrates a request to flow from one service to another and applying business logic, looking up data, or saving part of the requst to one model and the rest to another. Is that possible with Django as is or will it require subclassing a core Django class to accomplish this?

This is so closely related in principle to your other topic that I would suggest we keep this conversation together in one place. I would suggest that anyone interested in adding to this, contribute to the thread at can i create a code only model service