A structured approach to VO reconfigurations through Policies
This work addresses the need for flexible reconfiguration in Virtual Organizations, though it appears incremental as it builds directly on existing APPEL and STPOWLA methods.
The paper tackles the problem of enabling dynamic adaptability in Virtual Organizations by extending policy-based management approaches from workflow systems to the broader VO context, demonstrating the approach with a Travel Booking VO example.
One of the strength of Virtual Organisations is their ability to dynamically and rapidly adapt in response to changing environmental conditions. Dynamic adaptability has been studied in other system areas as well and system management through policies has crystallized itself as a very prominent solution in system and network administration. However, these areas are often concerned with very low-level technical aspects. Previous work on the APPEL policy language has been aimed at dynamically adapting system behaviour to satisfy end-user demands and - as part of STPOWLA - APPEL was used to adapt workflow instances at runtime. In this paper we explore how the ideas of APPEL and STPOWLA can be extended from workflows to the wider scope of Virtual Organisations. We will use a Travel Booking VO as example.