Grid computing is a form of distributed computing whereby a "virtual supercomputer" is made up of a group of networked, loosely coupled computers, working together to perform very large tasks. It is different from cluster computing, where the computers are similar and work together on a large task. The computers involved in grid computing can be quite different from one another. They work on separate pieces of the larger problem.

This short article about technology can be made longer. You can help Wikipedia by adding to it.