It strikes me that many companies who think they have either a unique process or a lot of process variations actually do not - they have a standard set of activities that must be assembled dynamically based on the circumstances, customer etc. This leads to a rules-first approach to defining the process and much simpler processes. This is particularly useful when you start considering case management processes where using the rules to determine what state the case has reached and what, therefore, is the right next step is a clearly better approach.
- leave anything related to transport, communication to other layers- use this revised CEP to express and execute event-relevant logic, the purpose of which is to translate the ambient events into relevant business events- have these business events trigger business processes (however lightweight you want to make them)- have these business processes invoke decision services implemented through decision management to decide what they should be doing at every step- have the business processes invoke action services to execute the actions decided by the decision services- all the while generating business events or ambient events- etc.
C. Wild, K. Maly, C. Zhang, C. Roberts, D. Rosca, and T. Taylor. TENCON '94. IEEE Region 10's Ninth Annual International Conference. Theme: Frontiers of Computer Technology. Proceedings of 1994, (August 1994)