<b>The 70% viewability cliff</b>

<b>The 70% viewability cliff</b>
Many demand-side bidders set a hard viewability floor. Below it, your inventory simply isn't bid on.

— 50% MRC viewable: eligible CPM pool ▮▮▮
— 65%: ▮▮▮▮▮▮
— 70%: ▮▮▮▮▮▮▮▮ (premium budgets unlock)
— 80%+: ▮▮▮▮▮▮▮▮▮▮

n=130 placements, 28d. Crossing 70% measured viewability isn't a 5% bump — it flips entire budget tiers from off to on. The jump from 68% to 72% paid +19% CPM in the sample.

<b>So what:</b> lazy-load below fold, fix sticky timing, and chase the 70 line specifically. It's a threshold, not a slope. Viewability ▲ +4pts, CPM ▲ +19%