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
52
Open Page Rank 8+
2
1,251
Open Page Rank 7+
7
4,898
Open Page Rank 6+
13
9,357
Open Page Rank 5+
18
15,639
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
193
117,730
India
120
58,829
United Kingdom
112
42,820
Italy
81
40,808
Brazil
74
34,656
Canada
111
31,601
Türkiye
53
31,246
Germany
95
31,200
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | IBM HTTP Server | IIS |
|---|---|---|
| LCP | 1.6 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 500 ms | 700 ms |
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.