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 461,281

136,825

Germany 410,205

36,200

Japan 319,757

21,094

France 280,640

30,856

India 230,910

68,343

Brazil 195,808

38,951

United Kingdom 180,609

49,161

Italy 168,567

46,831

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 Apache HTTP Server sites · All IIS sites