Google Web Server vs IIS

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

Top sites by authority

Google Web 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

Google Web Server · IIS · share of sites in each country using one or the other

United States 384

117,730

India 326

58,829

United Kingdom 247

42,820

Italy 209

40,808

Türkiye 8,856

31,246

Brazil 188

34,656

Canada 187

31,601

Germany 334

31,200

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 Google Web Server sites · All IIS sites