A reflective infrastructure for workflow adaptability

We present a flexible framework that enables workflow systems to adapt to changing conditions. The model is designed to reveal key aspects of the tasks involved in representing and enacting business processes. These fundamental characteristics are identified as state, behaviour, distribution, coordination and enactment. By isolating such core concepts in a way that allows them to be varied, we open up the general process of task coordination and execution, allowing for extensions in a planned way. By suitable manipulation of each of these aspects, at the appropriate level, a workflow system may be extensively modified in a way that minimises the effect of such change upon other aspects of the system. (C) 2000 Published by Elsevier Science B.V. All rights reserved.