Cloud computing allows the storage of data over the internet. The user can access this data easily and swiftly from remote areas, through a number of different devices. Cloud computing is especially important for data exchange, retrieval and storage in organizational set-ups and frameworks. Cloud computing falls under the domain of information technology. Some of its significant aspects include utility computing, hardware virtualization, autonomic computing and service-oriented architecture, among many others. In recent years, there has been rapid progress in this field and its applications are finding their way across multiple industries. This book presents detailed information about the key concepts and theories of cloud computing. It also discusses the varying nature of the applications of this technology. The objective of this book is to give a general view of the diverse areas of this field. It is designed to serve as an ideal reference text for students and researchers alike.