| Metric | AWS | Microsoft | Winner |
|---|---|---|---|
| Performance | 39 | 40 | Microsoft |
| Accessibility | 88 | 89 | Microsoft |
| Best Practices | 87 | 86 | AWS |
| SEO | 91 | 89 | AWS |
| Security | 66 | 67 | Microsoft |
| TTFB | 261ms | 330ms | AWS |
| Composite | 73 | 73 | Tie |
AWS and Microsoft are closely matched, each leading in different categories. AWS has a composite score of 73 while Microsoft scores 73.
Choose AWS when your primary concern is server response time and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Microsoft when your primary concern is performance and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 433 audited AWS sites and 2504 audited Microsoft 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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