Abstract: Systems, apparatuses, and methods for more efficiently providing and implementing order management and order processing services to one or more tenants of a multi-tenant business data processing platform. In one embodiment, processes, sub-processes, or functions within a larger order processing system may participate in an implementation of a subscriber-publisher protocol, wherein processes, sub-processes, or functions “publish” notifications and/or related information about “events” for consumption by subscribing processes, sub-processes, or functions.