Future Horizons of the Internet of Things presents a forward-looking exploration of how the Internet of Things (IoT), artificial intelligence, intelligent sensing, edge-connected systems, and data-driven technologies are reshaping contemporary society and critical infrastructure. Bringing together perspectives spanning smart healthcare and healthy aging, intelligent transportation, human digital twins, Industrial IoT, cybersecurity, predictive infrastructure maintenance, adaptive sensor systems, and sustainable smart mobility, the volume examines the transition from conventional connected devices toward increasingly autonomous, context-aware, resilient, and human-centered IoT ecosystems. It examines the convergence of AI and IoT, deep learning, feature engineering, anomaly and novelty detection, predictive analytics, digital twins, wireless sensor networks, and self-adaptive architectures, highlighting their roles in addressing emerging technological and societal challenges. The book combines conceptual foundations with application-oriented perspectives, enabling readers to understand both the enabling technologies and the broader implications of next-generation connected intelligence. Its multidisciplinary scope bridges advances in computing, engineering, intelligent systems, healthcare, transportation, and urban infrastructure. By emphasizing security, resilience, sustainability, interoperability, adaptability, and intelligent decision-making, the volume offers researchers, postgraduate students, practitioners, system designers, and technology strategists a comprehensive resource for understanding current developments and identifying future directions in IoT. Future Horizons of the Internet of Things is therefore an accessible yet technically informed guide to the technologies, design principles, opportunities, and challenges shaping the next generation of intelligent and connected environments.