Fr. C. Rodrigues Institute of Technology
Cloud Computing has emerged as the new technological advancement in Information Technology. The term "Cloud" borrowed from telephony, signifies the public utility for computing. This concept of cloud computing assisted the Green Computing as well. Since, the purchase of services from cloud computing is far better than that of owning private hardware, the cloud facilitates the centralization of organization's data, infrastructures, etc, thereby reducing the costly overhead. This paper tries to crawl over the way cloud computing emerged, its history, how long it will sustain, its advantages over conventional enterprise infrastructures and its disadvantages according to critics.