The Internet of Things (IoT) and big data are hot topics in today's interconnected world. They are big contributors to the core problems of information overload and complexity in both military and civilian complex systems and networks. This first-of-its-kind volume reveals the benefits of addressing these topics with the integration of fusion of information and analytics technologies (FIAT). The book explains how FIAT is materialized into decision support systems that are capable of supporting the prognosis, diagnosis, and prescriptive tasks within complex systems and organizations. This unique resource offers keen insight into how complex systems emerge from the interrelation of social and cognitive information, cyber and physical worlds, and the various models of decision-making and situational awareness. Practitioners also discover the central notions of analytics and information fusion.