"The cloud" is a concept, not a thing*. Google Drive is the cloud. Dropbox is the cloud. As B. Diddy said, Verizon Cloud is the cloud. (Almost everyone has cloud servers up these days.)
*Back in the day, all you had was a dial-up terminal. The computer - all of it - was remote. We were so happy when the computer came to the desktop and all our data was where we were, not someplace a phone call away. Now we're going back in time. Data is kept on the cloud and, with computers like the Chromebook, even the programs aren't local any more. Back(wards) to the future.