Microsoft Advertising vs Rubicon Project

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

Top sites by authority

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

United States 179,390

40,336

Italy 106,385

11,063

Germany 100,083

14,552

United Kingdom 87,382

21,806

France 73,584

12,787

Canada 57,630

22,134

Netherlands 63,866

11,037

India 59,833

14,870

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 Rubicon Project sites