Which ad format typically has the lowest CPM among in-stream video ads and is also eligible to serve more frequently, particularly on mobile devices?

Which ad format typically has the lowest CPM among in-stream video ads and is also eligible to serve more frequently, particularly on mobile devices?

• A. Pre-roll
• B. Overlay
• C. Mid-roll
• D. Bumpers

Answer: (D)

Short, non-skippable bumper ads deliver a quick, six-second message, which keeps the viewer experience lightweight and less intrusive. Because they’re so brief, you can serve a larger number of impressions per user at a lower cost per thousand impressions (CPM), making them cost-effective for broad reach. The brevity also suits mobile viewing, where users often consume short clips, so platforms permit higher frequency of bumper deliveries without overwhelming the audience—provided you respect frequency caps. Longer in-stream formats, like pre-roll or mid-roll, tend to have higher CPMs and slower delivery at high frequency because they are more intrusive and risk user skip or fatigue. Overlay placements are a different format and don’t offer the same short, non-skippable exposure that enables widespread, frequent serving on mobile.

Short, non-skippable bumper ads deliver a quick, six-second message, which keeps the viewer experience lightweight and less intrusive. Because they’re so brief, you can serve a larger number of impressions per user at a lower cost per thousand impressions (CPM), making them cost-effective for broad reach. The brevity also suits mobile viewing, where users often consume short clips, so platforms permit higher frequency of bumper deliveries without overwhelming the audience—provided you respect frequency caps.

Longer in-stream formats, like pre-roll or mid-roll, tend to have higher CPMs and slower delivery at high frequency because they are more intrusive and risk user skip or fatigue. Overlay placements are a different format and don’t offer the same short, non-skippable exposure that enables widespread, frequent serving on mobile.