(Telecompaper) In-use software-defined networking (SDN) market (Ethernet switches and controllers) will reach USD 13 billion in 2019, up from USD 781 million in 2014, as the availability of branded bare metal switches and use of SDN by enterprises and smaller cloud service providers (CSPs) drive growth, according to a research by IHS. The SDN market is still forming, and the top market share slots will change hands frequently, but currently the segment leaders are Dell, HP, VMware and White Box, according to researchers.