If I were to describe to you a digital media channel in which marketers bid on ad inventory in an auction-based model, would you think of paid search? Of course! But this also describes the relatively new online display category of real-time bidding (RTB) in which banner impressions are sold in a similar fashion.
eMarketer recently released Programmatic Advertising Forecast and Future Growth Trends, in which it projects that RTB digital display ad spending in the US will reach $9.03 billion by 2017 and will represent 29.0% of total U.S. digital display ad spending.
Read more: http://searchengineland.com/10-things-rtb-rookies-can-learn-from-sem-vets-178341