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+
109
2
Open Page Rank 8+
2,084
8
Open Page Rank 7+
9,035
28
Open Page Rank 6+
18,455
56
Open Page Rank 5+
33,215
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
179,390
145
Italy
106,385
26
Germany
100,083
27
United Kingdom
87,382
46
France
73,584
23
Netherlands
63,866
21
India
59,833
50
Canada
57,630
61
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Microsoft Advertising | SpotX |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 75 ms | 100 ms |
| CLS | 0 | 0.1 |
| TTFB | 800 ms | 400 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.