The document discusses Cisco's SDN strategy and technologies for data centers. It introduces Cisco ONE, the industry's most extensible SDN controller, and One Platform Kit (OnePK) for network programmability. OnePK provides APIs to program Cisco switches running IOS, IOS-XR and NX-OS. The Cisco ONE controller supports OpenFlow and provides a centralized control plane for virtual overlay networks like VXLAN. It is being expanded to support more platforms and features like network slicing and tapping. Cisco is working with customers in proof of concepts and aims to provide a consistent open standards-based approach applicable to multiple environments.