Apache APISIX vs IIS
Head-to-head usage across the sites we track.
Top sites by authority
Apache APISIX · IIS · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
53
Open Page Rank 8+
17
1,275
Open Page Rank 7+
40
5,011
Open Page Rank 6+
66
9,561
Open Page Rank 5+
107
15,981
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Apache APISIX · IIS · share of sites in each country using one or the other
United States
470
121,069
India
322
60,068
United Kingdom
183
43,214
Italy
121
39,691
Brazil
133
35,276
Germany
165
31,791
Canada
162
31,780
Türkiye
99
31,323
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apache APISIX | IIS |
|---|---|---|
| LCP | 1.9 s | 1.6 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 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.
IIS to Apache APISIX
| Domain | When |
|---|---|
| lamsoongroup.com | Mar 2026 |