AOLserver vs IIS
Head-to-head usage across the sites we track.
Top sites by authority
AOLserver · IIS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
61
Open Page Rank 8+
2
1,315
Open Page Rank 7+
2
5,213
Open Page Rank 6+
3
9,906
Open Page Rank 5+
3
16,556
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AOLserver · IIS · share of sites in each country using one or the other
United States
11
136,825
India
5
68,343
United Kingdom
8
49,161
Italy
6
46,831
Brazil
3
38,951
Türkiye
4
36,724
Canada
5
36,284
Germany
7
36,200
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AOLserver | IIS |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 750 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.