This book presents the proceedings of the International Conference on Wireless Intelligent and Distributed Environment for Communication (WIDECOM 2019), sponsored by the University of Milan, Milan, Italy, February 11-13, 2019. The conference deals both with the important core and the specialized issues in the areas of new dependability paradigms design and performance of dependable network computing and mobile systems, as well as issues related to the security of these systems. The WIDECOM proceedings features papers addressing issues related to the design, analysis, and implementation, of infrastructures, systems, architectures, algorithms, and protocols that deal with network computing, mobile/ubiquitous systems, cloud systems, and IoT systems. It is a valuable reference for researchers, instructors, students, scientists, engineers, managers, and industry practitioners. The book’s structure and content is organized in such a manner that makes it useful at a variety of learning levels. Presents the proceedings of the International Conference on Wireless Intelligent and Distributed Environment for Communication (WIDECOM 2019), Milan, Italy, February 11-13, 2019; Includes an array of topics networking computing, mobile/ubiquitous systems, cloud systems, and IoT systems; Addresses issues related to protecting information security and establishing trust in the digital space.