Glossary
Viewable ad impression
According to the Media Ratings Council, a served ad impression can be classified as a viewable impression if the ad was contained in the viewable space of the browser window, on an in-focus browser tab, based on pre-established criteria...
Viewable browser space
According to the Media Ratings Council, Advertisements and content associated with each page load can appear either within or outside the viewable space of the browser on a user’s screen—i.e., that part of the page...