Currently, we have already deployed an ABAP OO application that is exposing custom services directly from the ABAP stack. We are planning to migrate the service layer to Gateway and are now looking at what we need to arrange to get this running in both an embedded as well as central hub deployment.
In an embedded gateway scenario, I'll just be able to launch my ABAP code from the service implementation. But how does this work in a central hub deployment? Would I have to wrap all my methods into RFCs in order to call them from there?