Utility Computing

While utility computing or utility can be called with more computers to the computing resource itself. As the calculation and storage, as metered services similar to traditional public utilities (such as electricity, water, natural gas, or telephone network). This system has the advantage of low or no initial cost to get the hardware, but the computing resources are basically rented. Customers with very large computations or a sudden peak in demand can also avoid the delays that will get results from the physical and assembling a large number of computers.
"Utility computing" usually imagine some form of virtualization so that the amount of storage or computing power available would be far greater than the single time-sharing computer. Some servers are used at the end of "return" to make this possible. Maybe this is a dedicated computer cluster specifically built for the purpose of being leased out, or even an under-utilized supercomputer. Techniques to run a single calculation on multiple computers is known as distributed computing.