This well-organized book presents the principles, techniques, design, and implementation of cloud computing, with a perfect balance in the presentation of theoretical and practical aspects. The book, after providing a brief introduction to the subject, gives a clear analysis of different cloud computing models and explains all the relevant concepts on virtualization, security issues and challenges in cloud computing. In addition to this, the book introduces the reader with some of the prominent cloud service provider companies like Amazon, Microsoft and Google, and discusses the various features of these web services. Further, to provide the necessary background required to understand the principles of cloud computing, the roadmap for migration of application to cloud and roles of different standards used for cloud computing are discussed in detail. The discussion ends after addressing mobile cloud computing and microservices?the recent advances in cloud computing.