We are witnessing many advances in the field of Cloud Computing and allied technologies. These advances are due to the many developments in algorithmics and theory, hardware and systems, networking, and high performance computing, to name a few. The Encyclopedia of Cloud Computing showcases some of the most important topics in the field today. The editors have managed to assemble a solid and well selected group of entries from active researchers in the field. I believe that the Encyclopedia is a great addition to the literature. It will serve as a valuable source of reference material of up-to-date research in this continuously evolving field and it will be well received by researchers and practitioner. Albert Zomaya, Chair Professor of High Performance Computing & Networking, Sydney University, Editor in Chief, IEEE Transactions on Sustainable Computing This is a remarkable book and its editors, San Murugesan and Irena Bojanova, should be particularly proud of their accomplishment: they have been able to bring under the same title many of the most recognized names in the field of Cloud Computing and provide the readers with a broad, yet deep view of the field of Cloud Computing which offers both advanced research results and tutorial elements. This massive work is sure to attract academic and industrial researchers as well practitioners in the domain. Jean-Luc Gaudiot, Professor, University of California, Irvine, 2017 IEEE Computer Society President This Encyclopedia of Cloud Computing is quite an impressive book as it contains many nuggets of knowledge for the domain of Cloud Computing. It offers its readers a 360 degrees view for this domain and I recommend it to students as well as industrial and business readers. Schahram Dustdar, Professor of Computer Science, TU Wien, Austria; IEEE Fellow This book is a well-organized reference for cloud computing communities, which summaries all cloud computing aspects, including methodologies, patterns, architectures, system implementations, and applicants. This is the best and most comprehensive book on cloud computing I have read. I would like to forward my thanks to the authors, Professor San Murugesan and Professor Irena Bojanova, who have taken such a great effort to bring out the Encyclopedia of Cloud Computing. Lizhe Wang, ChuTian Chair Professor and Fellow, British Computer Society and IET School of Computer Science, China University of Geosciences, China As name suggests, this book is truly an encyclopedia for cloud computing, with comprehensive coverage of a range of topics from mobile clouds, application platforms, elasticity, legal and economics of cloud services delivery to application engineering. I strongly recommend the book for researchers, educators, and practitioners. Rajkumar Buyya, Director, Cloud Computing and Distributed Systems (CLOUDS) Lab, The University of Melbourne, Australia This is a remarkable book. It can be read selectively (certain parts or chapters) or from cover to cover. It offers readers a comprehensive and detailed view of cloud computing, covering horizontal technologies as well as vertical solutions and applications delivered in the cloud. It meets current needs and I strongly recommend it to technical and business people alike. It will also have lasting practical and historical value, covering the foundations of cloud computing for generations to come. Dejan S. Milojicic, Senior Researcher and Manager, Hewlett Packard Laboratories, USA; IEEE Computer Society President, 2014