Software-defined networking (SDN) is a promising way for offering efficient network management and future networks. The SDN consists of an intelligent configuration, better flexibility to integrate with various networks, communication and security technologies, and high-performance architecture. The SDN mainly consists of three layers, namely (1) the Infrastructure layer, (2) the Control layer, and (3) the Application layer. They are arranged as a stack on top of one another. The infrastructure layer is the first layer, and it is dedicated to the data forwarding data plane. The infrastructure layer includes switching devices. The control layer is the middle layer, and it is dedicated to network performance. The control layer implements the control plane. An application layer is the last layer, which is located above the control layer. The application layer includes SDN applications that are configured to meet customer needs and their data security. The SDN improves the traditional networking paradigm by enabling smart devices to separate forwarding functions from control operations and integrate with blockchain and deep learning models. Efficient data communication and data security are key components of various networks. Some of the potential applications of SDN are IoT, smart transportation, health monitoring, and smart home. S-Logix has taken various research works on the integration of SDN along with the IoT by utilizing blockchain, machine learning, and deep learning models to improve network security further.