Real-Time Bidding’s Biggest Buyers

AT&T leads the programmatic pack

EMarketer expects spending on real-time bidding to nearly double this year. In fact, the share of brands that buy their display ads via a programmatic pipeline of ad tech firms versus direct relationships with publishers will make up 13 percent of U.S. display spending in 2013, the research firm projected. Supply-side platform Rubicon Project has an idea on who’s driving the shift.