SDN or Software-Defined Networking can be interchangeably referred to as Network Virtualization, Network Abstraction, Network Decoupling, or Network Hypervisor. These synonyms connote the capability of SDN to create logical networks that can be managed independently regardless of the underlying physical network infrastructure. SDN provides a more flexible network management approach, enabling network administrators to implement software-based policies that control network traffic, ensuring optimized network performance and security. The technology has become increasingly popular with businesses and organizations due to its ability to centralize network management, reduce complexity, and streamline network operations. Regardless of the synonym used, SDN remains a game-changing innovation in the networking industry with the potential to transform how networks are managed, provisioned, and deployed.