de Roure, D., Baker, M., Jennings, N. R. and Shadbolt, N.
The evolution of the Grid.
Berman, F., Fox, G. and Hey, A.J.G. (eds.)
Grid Computing - Making the Global Infrastructure a Reality.
John Wiley and Sons Ltd.
In this paper we describe the evolution of grid systems, identifying three generations: first generation systems which were the forerunners of the Grid as we recognise it today; second generation systems with a focus on middleware to support large scale data and computation; and third generation systems where the emphasis shifts to distributed global collaboration, a service oriented approach and information layer issues. In particular, we discuss the relationship between the Grid and the World Wide Web, and suggest that evolving web technologies will provide the basis for the next generation of the Grid. The latter aspect – which we define as the Semantic Grid – is explored in a companion paper.
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