Microsoft Advertising vs OpenX

Head-to-head usage across the sites we track.

Top sites by authority

Microsoft Advertising · OpenX · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

Microsoft Advertising · OpenX · share of sites in each country using one or the other

United States 194,280

45,149

Italy 120,089

11,873

Germany 109,223

15,217

United Kingdom 96,386

23,140

France 85,328

13,999

Canada 64,841

24,113

India 66,986

16,209

Netherlands 71,387

11,631

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Microsoft Advertising sites · All OpenX sites