Grid Computing requires the use of software that can divide and farm of discount program to as many as several thousand computers. Leading researchers in Europe and the U.S. view on the development of special equipment and environment that will encourage the convergence of parallel programming, distributed computing and data management community. Special topics covered include: Overview of structural characteristics and behavior of Grid applications Computer Discussion of case studies showing the potential of alternative programming techniques Computer Grids in solving real problems This book is unique in the outline of Grids computing needs both in the integration of high-end resources using OGSA / Globus, and loose integration Peer-2-Peer/Entropia/United Devices.