We are trying to setup FSM server and PSO server on two separate domains. FSM is on prem and PSO engine is on Cloud. We are trying  to  create connections using a middle layer (Mulesoft).  Can we get some expert advice on what configurations need to change both in FSM and PSO to be able to talk through Mulesoft. (The PSO user credentials are saved in FSM sever). (Both for sending dataload and receiving the broadcast)

It is really urgent.  A response would be appreciated.

(Currently the FSM/PSO on prem is configured and works well). However, the PSO is now being moved to Cloud.