VIOOH Hires Leading Digital Expert to Drive China Expansion Today, VIOOH , the leading premium global digital out of home (DOOH) supply-side platform, announced the hire of Calvin Chan as the new chief executive officer in China. In his new role, Chan will be responsible for scaling and developing VIOOH’s programmatic digital out of home (pDOOH) offering across mainland China and Hong Kong, China. “We’re delighted to be welcoming Calvin Chan to the VIOOH team. Calvin is a widely respected leader within the industry and he brings a wealth of experience and knowledge to this role,” said Jean-Christophe Conti, chief…