Ask If a display ad loads on time but gets replaced by a sticky banner, should it still count as an impression?

[Dean101]

Ad measurement focuses on whether the creative had a chance to render and be seen not just how long it stayed in a fixed slot. If viewability signals still capture that initial render event However analysts should also track exposure quality since layout shifts can affect attention and user experience. Treating impressions this way helps keep reporting consistent across dynamic page designs while still allowing separate metrics for sticky engagement.