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 179,390

40,202

Italy 106,385

10,571

Germany 100,083

13,671

United Kingdom 87,382

20,766

France 73,584

11,940

Canada 57,630

20,948

Netherlands 63,866

10,373

India 59,833

14,264

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, Aug 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