The short answer is this: grid computing is a service for sharing computer power and data storage capacity over the Internet. Grid computing is making big contributions to scientific research, helping scientists around the world to analyze and store massive amounts of data.

The grid computing dream began with talk of creating an all-powerful "Grid": one grid comprised of many smaller grids joined together, forming a global network of computers that can operate as one vast computational resource.

In grid computing reality, there are already hundreds of grids around the world, each one created to help a specific group of researchers, or a particular group of users. And across the world, researchers and software engineers are working to bring "the Grid" closer to achieving the dream.

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