Apache HTTP Server vs IIS

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

Top sites by authority

Apache HTTP Server · IIS · 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

Apache HTTP Server · IIS · share of sites in each country using one or the other

United States 398,004

121,069

Germany 364,164

31,791

Japan 273,172

17,552

France 236,181

25,374

India 200,300

60,068

Brazil 172,780

35,276

United Kingdom 156,332

43,214

Italy 143,400

39,691

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 Apache HTTP Server sites · All IIS sites