While the introduction of enterprise software is changing the nature of the media buying landscape, the media agencies’ role is what it has always been, which has been “to bring price efficiency” into the media buying process, explains  Josh Jacobs, CEO of Accuen, the trading desk unit of the giant agency holding company Omnicom.

We spoke with him at Advertising Week after he participated in a panel on programmatic advertising moderated by Jay Sears of the Rubicon Project.