IIS vs SimpleHTTP
Head-to-head usage across the sites we track.
Top sites by authority
IIS · SimpleHTTP · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
50
0
Open Page Rank 8+
1,251
1
Open Page Rank 7+
4,874
5
Open Page Rank 6+
9,276
7
Open Page Rank 5+
15,469
8
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
IIS · SimpleHTTP · share of sites in each country using one or the other
United States
117,730
28
India
58,829
30
United Kingdom
42,820
17
Italy
40,808
15
Brazil
34,656
27
Canada
31,601
14
Türkiye
31,246
15
Germany
31,200
16
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | IIS | SimpleHTTP |
|---|---|---|
| LCP | 1.7 s | 1.8 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 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.