Nowadays, many data- and/or computation-intensive applications in the area of e-science and e-business involve coordinated sharing of highly distributed resources in a grid environment. In this context, a collaborative workflow management system is always required as part of the sophisticated problem solving process. Efficient management of workflow in grid environments has become increasingly important. Issues such as grid workflow infrastructure based on the Grid toolkits, grid workflow modeling and specification, grid workflow verification and validation, and decentralized grid workflow execution based on peer-to-peer technology have already evoked a high degree of interest.
With the success of the 1st workshop, which was held in Melbourne, Australia in 2005, the 2nd International Workshop on Grid and Peer-to-Peer based Workflows (GPWW) was held in conjunction with the 4th International Conference on Business Process Management (BPM 2006), in Vienna, Austria. The aim of this workshop was to bring together researchers and practitioners from academia, industry and governments to report advances in grid and peer-to-peer based workflow research.