Sometimes called a view or an ad view, is a term that refers to the point in which an ad is viewed once by a visitor, or displayed/heard once on a web page/radio. The number of impressions of an advertisement is determined by the number of times the page/spot is located and heard.
In the media, advertising, and marketing industries, advertising inventory or allocations is the space available to advertisers on newspapers, magazines, and digital platforms.
For instance, if you trigger a 2min file, there is a potential of four 30 seconds ad spots, the inventory or allocations = 4, however we might only have 3 ads available to fill the ad-break, consequently impressions=3 and filled rate = 75%
- Filled Rate:
The number of times an ad was shown to users (impressions) compared to the number of times an ad was requested from a specific ad source (allocation).
The fill rate for each ad source is calculated using the following formula:
Impressions / Allocations