Note: digital advertising that is bought through a retailer's media network or demand-side platform (DSP); examples of websites or apps primarily engaged in retail ecommerce include Amazon, Walmart, and eBay; examples of retail media networks include Amazon's DSP and Etsy's Offsite Ads; includes ads purchased through retail media networks that may not appear on ecommerce sites or apps
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 from 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