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Technologies · September 2026

Which Retargeting is readiest for AI agents?

3 measured, averaging 19.6% against 21.0% for the web overall. Technologies that display ads to users who have previously interacted with the site

Every one of them, best first

How to read these figures

The colour says what a bar IS, not how it scores: the accent is the one this page is about, grey is everything it is compared with, and the hollow bar is the web overall — the ruler, not a rival. Whether a figure is above or below the rest of the web is in the number and in the arrow beside it.

Every figure here comes from a sample, not from counting every site — so it carries a margin: how much it could move if we had happened to sample different pages. A figure measured on a thousand pages has a wide margin; one measured on a hundred thousand has a narrow one. It matters for one thing: two figures that differ by less than the wider of their margins are not one above the other, they are tied. That is why nothing here has a position number.

Every technology in this category the census can publish a figure for, including the ones above. A technology is here when it has all four dimensions and enough sample to publish; a technology that belongs to two categories is in both.

TechnologyAWCSMonth by month
Criteo

Criteo

Sample
n=1,144
Coverage
83.6%
Margin
±1.57
The web overall
21.0%

Two figures closer together than ±1.57 are tied, not ranked.

Criteo scores 26.7%26.7%
Criteo: 5 months, up▲ +2.6
AdRoll

AdRoll

Sample
n=282
Coverage
98.6%
Margin
±3.16
The web overall
21.0%

Two figures closer together than ±3.16 are tied, not ranked.

AdRoll scores 22.8%22.8%
AdRoll: 5 months, no significant change= +0.7
Yahoo Advertising

Yahoo Advertising

Sample
n=348
Coverage
97.5%
Margin
±2.84
The web overall
21.0%

Two figures closer together than ±2.84 are tied, not ranked.

Yahoo Advertising scores 9.3%9.3%
Yahoo Advertising: 5 months, no significant change= +1.3