Cost-per-thousand viewable impressions (viewable CPM)

Cost-per-thousand viewable impressions bids (vCPM) let you bid for impressions when your ads appear in a viewable position, and you only pay when ads are measured as viewable by Active View.

  • Viewability is measured by the Active View technology on Display Network websites.
  • An ad is counted as "viewable" when 50 percent of your ad shows on screen for one second or longer for display ads, and two seconds or longer for video ads.

vCPM bidding vs. CPM bidding

Viewable CPM bidding will be replacing CPM bidding, and existing CPM campaigns will automatically migrated to viewable CPM bidding. You may want to adjust your CPM bids to stay competitive for more valuable viewable impressions.

Bidding for viewable impressions means you only pay for ads that come into view, so using a higher vCPM bid than your CPM bid is usually more effective for winning these more valuable types of impressions. For example, if your max CPM bid is $1.00, you may want to consider starting with a vCPM bid of $1.50 or $2.00

Learn more about viewable CPM bids

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