Operating system, the soul of an electronic device, has been turned into a subject of great competition among the companies and of fascination among the techies. New operating systems are being developed by different companies while olds are getting updates. Now come to the word ‘Cloud computing’. Though it has become a buzzword in the field of technology, many people still don’t know about it. But they are using it in almost every work they do in internet. According to Wikipedia, “Cloud computing is the use of computing resources (hardware and software) that are delivered as a service over a network (typically the Internet)”.