Offering the promise of computing as a utility,Estnoc Cloud computing is a fresh approach that offers significant cost savings, diminished IT complexity, and increased flexibility in managing IT and responding to market changes. Unlike many technologies, cloud computing has evolved in response to customer needs and builds on established trends for driving the cost out of the delivery of services while increasing the speed and agility with which services are deployed. Cloud computing allows organizations to deliver highly-scalable and reliable applications more quickly and cost effectively. With cloud-based applications in place, these enterprises are freed to deliver new products to their customers more rapidly. Because they are able to ‘think big,’ unencumbered by the constraints of scale, they are also able to make better business decisions by applying sophisticated analyses to the wealth of data available within them. Cloud computing can be rapidly provisioned and released with minimal management effort or service provider interaction. Ultimately, with its offering of scalable, real-time, internet-based information technology services and resources, the cloud can satisfy the computing needs of a universe of users, without the users incurring the costs of maintaining the underlying infrastructure.