Microsoft Advertising vs SpotX
Head-to-head usage across the sites we track.
Top sites by authority
Microsoft Advertising · SpotX · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
108
2
Open Page Rank 8+
2,055
8
Open Page Rank 7+
8,925
28
Open Page Rank 6+
18,225
56
Open Page Rank 5+
32,802
77
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Microsoft Advertising · SpotX · share of sites in each country using one or the other
United States
194,280
162
Italy
120,089
27
Germany
109,223
29
United Kingdom
96,386
47
France
85,328
31
Netherlands
71,387
26
India
66,986
56
Canada
64,841
59
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Microsoft Advertising | SpotX |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.1 |
| TTFB | 800 ms | 400 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.