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+
61
1
Open Page Rank 8+
1,315
1
Open Page Rank 7+
5,213
4
Open Page Rank 6+
9,906
4
Open Page Rank 5+
16,556
6
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
136,825
24
India
68,343
27
United Kingdom
49,161
15
Italy
46,831
17
Brazil
38,951
18
Türkiye
36,724
14
Canada
36,284
15
Germany
36,200
18
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | IIS | SimpleHTTP |
|---|---|---|
| LCP | 1.7 s | 2 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.