Cloud computing is the delivery of computing as a service rather than as a product, where by shared resources software and information are provided to computer are other device as a utility over a network. In a cloud computing system, there is a significant workload shift. Local computers no longer have to do all the heavy lifting, when it comes to running applications. The network of computers that makeup the cloud handles them instead. Hardware and software demand on the users side decrease. The only thing the users computer needs to be able to run is the cloud computing systems interface software, which can be as simple as a web browser and the clouds network take care of the rest. This book is prepared based on the Authors teaching the subject for Master degree level recent years, keeping in view of many universities Syllabus in particular.