What Is the Cloud?

Some say that “the cloud” is really just a big rack of computers in Virginia. That’s actually not far from the truth, as Amazon and others do maintain large data centers in that area, plus in California and many other spots around the world. “The cloud” is just a bunch of computers somewhere on the Internet.

When people talk about a computers in the cloud, they mean a computer that is accessed only over the Internet, that you might not even know (or care about) the physical location of, and that someone else owns and maintains. As you can see, that’s a pretty generic and flexible definition. A huge variety of cloud services is available, with an equally huge range of pricing, reliability, and what you get for your money. ...

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