The source provides the following information: "Walled gardens includes Facebook properties, Google properties excluding YouTube & Amazon Properties. Other social captures smaller walled garden/logged in sites. Streaming includes YouTube and many other streaming sites. Programmatic sites are based on the ad tech capabilities & publishers captures all other sites."
Citation formats
Digital ad impressions in the U.S. 2018.2021, by site type
In the first half of 2021, **** percent of digital ad impressions generated in the United States came from streaming sites. Major walled gardens, such as Facebook, Google, and Amazon accounted for ** percent of the impressions.
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MarketingCharts. (September 9, 2021). Distribution of digital ad impressions in the United States from 2018 to 2021, by site type [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/269874/number-of-display-ad-impressions-in-the-us/
MarketingCharts. "Distribution of digital ad impressions in the United States from 2018 to 2021, by site type." Chart. September 9, 2021. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/269874/number-of-display-ad-impressions-in-the-us/
MarketingCharts. (2021). Distribution of digital ad impressions in the United States from 2018 to 2021, by site type. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/269874/number-of-display-ad-impressions-in-the-us/
MarketingCharts. "Distribution of Digital Ad Impressions in The United States from 2018 to 2021, by Site Type." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Sep 2021, /statistics/269874/number-of-display-ad-impressions-in-the-us/
MarketingCharts, Distribution of digital ad impressions in the United States from 2018 to 2021, by site type ÌÇÐÄÆƽâ°æ, /statistics/269874/number-of-display-ad-impressions-in-the-us/ (last visited July 30, 2026)
Distribution of digital ad impressions in the United States from 2018 to 2021, by site type [Graph], MarketingCharts, September 9, 2021. [Online]. Available: /statistics/269874/number-of-display-ad-impressions-in-the-us/
