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 9+
7
53
Open Page Rank 8+
53
1,275
Open Page Rank 7+
83
5,011
Open Page Rank 6+
83
9,561
Open Page Rank 5+
85
15,981
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
326
121,069
India
264
60,068
United Kingdom
191
43,214
Italy
164
39,691
Brazil
164
35,276
Germany
184
31,791
Canada
150
31,780
Türkiye
163
31,323
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Google Web Server | IIS |
|---|---|---|
| LCP | 1.8 s | 1.6 s |
| INP | 100 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 700 ms |
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.