“The Grid” takes its name from an analogy with the electrical “Power Grid”
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What does Grid mean?
Grid computing is a term referring to the combination of computer resources from multiple administrative domains to reach a common goal, to solve a single task, and may then disappear just as quickly. “The Grid” takes its name from an analogy with the electrical “power grid”. The idea was that accessing computer power from a computer grid would be as simple as accessing electrical power from an electrical grid”.