Software-Defined Networking (SDN) is a dynamic, manageable, and cost-effective approach to networking that decouples the network control and forwarding functions, allowing network control to become programmable and the underlying infrastructure to be abstracted for applications and network services. Coursera's SDN catalogue teaches you the ins and outs of this innovative networking method. You'll learn how to design, implement, and manage SDN to streamline and automate your network. You'll also explore the key components of SDN such as SDN Controllers, Network Function Virtualization, and SDN Applications. Moreover, you'll grasp the advantages of SDN over traditional networking, including flexibility, control, and scalability. By mastering SDN, you'll be well-positioned to contribute to the evolution of network architecture and operations.