IBM HTTP Server vs IIS
Head-to-head usage across the sites we track.
Top sites by authority
IBM HTTP Server · IIS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
53
Open Page Rank 8+
2
1,275
Open Page Rank 7+
7
5,011
Open Page Rank 6+
13
9,561
Open Page Rank 5+
18
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
IBM HTTP Server · IIS · share of sites in each country using one or the other
United States
192
121,069
India
122
60,068
United Kingdom
107
43,214
Italy
80
39,691
Brazil
78
35,276
Canada
117
31,780
Germany
93
31,791
Türkiye
59
31,323
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | IBM HTTP Server | IIS |
|---|---|---|
| LCP | 1.7 s | 1.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 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.