Cloud computing means storing and accessing data and programs over the Internet instead of your computer's hard drive.
The cloud is just a metaphor for the Internet.
The flexibility of cloud computing into your IT environment comes with several benefits:
Predictable budgets—Change IT budget from expensive upfront costs to lower monthly charges.
Reduced infrastructure costs—Eliminate the need for a large amount of in-house infrastructure thus lowering the drain on budget and IT support.
Lower operational costs—Maintenance, personnel, updates, and infrastructure upgrades are handled by your vendor freeing up budgets for other IT initiatives.
Freedom from commitment—Most vendors operate on a pay-as-you-go model. So you can quickly and easily switch to alternate vendors if you find a better fit.