This book focuses on recent and emerging techniques for the enhancement of smart healthcare, smart communication, and smart transportation systems. It covers topics ranging from Machine Learning techniques, the Internet of Things (IoT), security aspects of medical documents, the performance of various protocols used in the communication and transportation environment, simulation of systems for real-time applications, and overall analysis of the previously mentioned. Applications such as transportation systems, stock market prediction, Smart Cities, and vehicular communication are dealt with.Covers three important aspects of smart cities i.e., healthcare, smart communication and information, and smart transportation technologies.Discusses various security aspects of medical documents and the data preserving mechanisms.Provides better solutions using IoT techniques for healthcare, transportation, and communication systems.Includes the implementation example, various datasets, experimental results, and simulation procedures.Offers solutions for various disease prediction systems with intelligent techniques. This book is aimed at researchers and graduate students in computer science, electrical engineering, and data analytics.