Abstract :
Under the traditional model, enterprises to establish a set of IT systems not only need to buy hardware and other
infrastructure, but also to buy software licenses, the need for specialized staff maintenance. The scale of the enterprise will continue to upgrade the various hardware and software facilities to meet the needs. For enterprises, computers and other hardware and software itself is not what they really need, they are just to complete the work, to provide efficient tools only. For individuals, we usually use the computer to install a lot of software, and many software is a fee, the user is not often used to buy the software is very uneconomical. We only need to pay a small amount of 'rent' to 'rent' to these software services for us to save a lot of money to buy hardware and software. Just as we use electricity every day, but we are not every self-generator, it is provided by the power plant; we use tap water every day, but we do not have every well, it is provided by the water plant. This model is great enough to save resources and facilitate our lives. The face of the computer to bring us the troubles, we can like the use of water and electricity as the use of computer resources? These ideas eventually led to the generation of clouds and cloud computing.
Keyword :
Cloud computing, Cloud storage, Application development