Cloud Computing as a Service
Traditionally computing has involved substantial fixed costs, such as those costs incurred in the building and delivery of an email service, notably server hardware and software licensing. However, because cloud computing is dynamically scalable such fixed costs disappear. All, of the costs of cloud computing are therefore on a per-usage or variable basis.
Cloud allows you to easily access your files from anywhere on many device types. While you might upload documents from your home computer, you can then easily access them from your laptop or mobile device while on the road anywhere, anytime.