The rapid growth of IoT and its applications in smart cities have brought about significant challenges for academic scholars. The increasing number of interconnected devices and the massive amounts of data they generate strain traditional networks, leading to inefficiencies and security vulnerabilities. Additionally, the centralized control plane in Software Defined Networks (SDN) poses a single point of failure, hindering network performance. Moreover, IoT devices themselves are susceptible to attacks, compromising user data and privacy. Scholars in the field urgently need a comprehensive solution to address these pressing issues. Network-Enabled IoT Applications for Smart City Services offer a compelling solution to the challenges faced by academic scholars in the IoT and smart city domain. Dr. K. Hemant Kumar Reddy, along with Dr. Diptendu SinhaRoy and Tapas Mishra, presents a persuasive and timely approach in this book. They propose leveraging SDN, which decouples the control plane from the data plane, enabling more efficient handling of high-frequency data streams from IoT devices. Additionally, the authors advocate for the integration of blockchain technology to enhance security and reliability in IoT applications. By decentralizing control and ensuring tamper-proof transactions, blockchain offers a promising solution for robust data management. This book provides academic scholars with a comprehensive and innovative solution to the challenges posed by IoT applications in smart city services. With their extensive expertise, the authors address critical issues such as network strain, security vulnerabilities, and device failures. By offering insights into the use of SDN and blockchain, the authors provide a roadmap for scholars to enhance network efficiency, security, and reliability in IoT applications. Network-Enabled IoT Applications for Smart City Services serve as an invaluable resource, inspiring further research and development in this rapidly evolving field and enabling scholars to make significant contributions to the advancement of IoT and smart city technologies.