Cloud Computing is the buzz word these days. But not everyone is aware of what it is, how it came about and how capable it is of molding the future of technology. This book is aimed at answering these questions and many more from a very basic level. It throws light at the fact that cloud computing, although a relatively new term, has originated from much older technologies. The cloud is developing at a fast pace but it still has many glitches to fix and problems to solve, one of them being data security attacks. Some of the top providers of cloud services have been mentioned in the book, who are competing to provide the best services to their customers. The cloud is changing the way data is handled or stored. It is also providing software as a service, infrastructure as a service, platform as a service, etc. in order to make data handling easier and cheaper for the user of the service.