OpenFlow was one of the first open Software Defined Networking standards, it’s an open protocol which allows an SDN Controller to communicate with network devices, i.e. switches and routers. These devices may be hardware (the jargon word “tin” is often used) or software, as applies inside a virtual environment.
IABM Glossary of Terms is a fully searchable online glossary of technical terms relating to the Broadcast & Media Industry.