"SDN-Supported Edge-Cloud Interplay for Next Generation Internet of Things is an invaluable resource which provides a wide range of research directions in the field of edge-cloud computing, SDN, and IoT. The integration of SDN in edge-cloud interplay is a promising framework for enhancing the QoS for complex IoT-driven applications. Interplay between cloud and edge solves major challenges arises in traditional IoT architecture. This book is a starting point for those involved in this research domain and explore different burning issues related to network congestion, traffic management, latency, QoS, scalability, security, and controller placement problems etc"--