Programmatic buying of media including display, video, radio and soon digital out-of-home, comprises the “biggest push” around media buying at WPP’s giant media agency GroupM, says Christina Beaumier, VP at GroupM’s Xaxis unit, in this interview with Beet.TV

Beaumier explains how data around consumer behavior is driving effective media buying in real-time – and how this is becoming an essential element in the growth of digital video.

We spoke with her in February at the Beet.TV executive retreat in Vieques.