Metrics
View rate
Percentage of impressions that resulted in a viewable or completed view.
View rate measures how often an ad impression turned into a 'view' under whatever definition the platform uses. YouTube TrueView: viewer watched 30+ seconds or to-the-end. Programmatic display: 50% of pixels in-view for ≥1 second (MRC standard). Native: viewer scrolled past the ad. Always check the platform's view definition — it changes per channel and is not comparable across them.
Example
YouTube TrueView campaign: 1.2M impressions, 312K views (26% view rate), $0.04 average CPV, blended CPM $11.20 — campaign optimized to view rate, not CPC.