Amazon EC2 vs IIS
Head-to-head usage across the sites we track.
Top sites by authority
Amazon EC2 · IIS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
52
Open Page Rank 8+
17
1,251
Open Page Rank 7+
56
4,898
Open Page Rank 6+
104
9,357
Open Page Rank 5+
187
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
Amazon EC2 · IIS · share of sites in each country using one or the other
United States
3,535
117,730
India
2,070
58,829
United Kingdom
1,565
42,820
Italy
1,022
40,808
Brazil
1,350
34,656
Canada
1,598
31,601
Germany
1,061
31,200
Türkiye
614
31,246
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Amazon EC2 | IIS |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Amazon EC2 to IIS
| Domain | When |
|---|---|
| circularinnova.com | Oct 2025 |
IIS to Amazon EC2
| Domain | When |
|---|---|
| classicbus.co | Nov 2025 |
| hotelsedinburgh.net | Nov 2025 |