| Metric | Azure | core-js | Winner |
|---|---|---|---|
| Performance | 41 | 36 | Azure |
| Accessibility | 92 | 88 | Azure |
| Best Practices | 82 | 84 | core-js |
| SEO | 89 | 91 | core-js |
| Security | 66 | 65 | Azure |
| TTFB | 316ms | 371ms | Azure |
| Composite | 72 | 72 | Tie |
Azure outperforms core-js in 4 of 7 categories, with a stronger composite score (72 vs 72). core-js leads in best practices, SEO.
Choose Azure when your primary concern is server response time and performance. Its audit data shows consistent strength in these areas across the sampled sites.
Choose core-js when your primary concern is best practices and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 78 audited Azure sites and 1570 audited core-js 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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