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+
4
61
Open Page Rank 8+
20
1,315
Open Page Rank 7+
42
5,213
Open Page Rank 6+
66
9,906
Open Page Rank 5+
103
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
Apache APISIX · IIS · share of sites in each country using one or the other
United States
461
136,825
India
298
68,343
United Kingdom
205
49,161
Italy
141
46,831
Brazil
133
38,951
Türkiye
97
36,724
Canada
178
36,284
Germany
187
36,200
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apache APISIX | IIS |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 800 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.
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 |