The document discusses UC SDN (Unified Communications Software-Defined Networking). It provides an overview of SDN controllers, APIs, and their use in data centers, Wi-Fi, campus and WAN networks to support UC applications. It notes that UC SDN can address complexity, improve efficiencies, visibility, control, automation and agility. The document also summarizes market forecasts for SDN and activities of the UC SDN AG, including use cases, specifications, liaison with ONF, conferences and marketing plans.