This book outlines the processes and applications of information systems in detail. It presents researches and studies performed by experts across the globe. Information systems refer to an organized system, which is used to store, organize, filter, collect, create, process, distribute and communicate information. It is an essential part of management, operations and decision-making. The different types of information systems are expert, search, geographic, etc. This text attempts to understand the multiple branches that fall under the discipline of information systems and how such concepts have practical applications. It will prove to be immensely beneficial to students and researchers in this field. As this field is emerging at a rapid pace, the concepts of this book will help the readers understand the innovative and emerging trends of the subject.