”Cloud” is a crock of hooey buzzword. There’s no “cloud.” For the average end user, it is the realization that we’ve farmed out tasks to unknowable servers across the Internet. For the technical user, it’s setting up instances of servers in some large hosting company’s big data centers. The “cloud” people refer to today is nothing more than the continued evolution of virtualized hosting.
Joe Greco, “Most Energy Efficient (Home) Setup”