Additional Note: Mobile programmatic digital display ads are mobile display ads transacted or fulfilled via automation, including everything from publisher-erected application programming interfaces (APIs) to more standardized real-time bidding (RTB) technology. RTB digital display ads are programmatic ads that are transacted in real time, at the impression level.
Methodology: Estimates are based on the analysis of various elements related to the ad spending market, including macro-level economic conditions, historical trends of the advertising market, historical trends of each medium in relation to other media, reported revenues of major ad publishers, estimates from other research firms, data from benchmark sources, consumer media consumption trends, consumer device usage trends, and EMARKETER interviews with executives at ad agencies, brands, media publishers, and other industry leaders.