Based on 15 and 249 real audits
| Metric | FullStory | Microsoft Advertising | Winner |
|---|---|---|---|
| Performance | 30 | 32 | Microsoft Advertising |
| Accessibility | 91 | 89 | FullStory |
| Best Practices | 86 | 79 | FullStory |
| SEO | 93 | 91 | FullStory |
| Security | 65 | 66 | Microsoft Advertising |
| TTFB | 389ms | 318ms | Microsoft Advertising |
| Composite | 72 | 72 | Tie |
FullStory and Microsoft Advertising are closely matched, each leading in different categories. FullStory has a composite score of 72 while Microsoft Advertising scores 72.
Choose FullStory when your primary concern is best practices and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Microsoft Advertising when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 15 audited FullStory sites and 249 audited Microsoft Advertising sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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