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 180,700

37,294

Italy 113,422

10,461

Germany 98,787

13,236

United Kingdom 87,840

20,070

France 76,969

11,471

Canada 57,987

20,720

Netherlands 64,450

10,454

India 59,005

13,645

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, Sep 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