PHOENIX--(BUSINESS WIRE)--The Interactive Advertising Bureau (IAB) Board of Directors today elected David Morris, Chief Revenue Officer at CBS Interactive, as Chairman. The election took place at the opening of the 2015 IAB Annual Leadership Meeting in Phoenix, AZ. Morris, who was Vice Chair in 2014, succeeds Vivek Shah, CEO of Ziff Davis, Inc., who served as the head of the board last year. Lauren Wiener, President, Global Sales and Marketing at Tremor Video, has been voted incoming Vice Chair