Based on 159 and 3 real audits
| Metric | Adobe Experience Manager | IBM Carbon Design System | Winner |
|---|---|---|---|
| Performance | 33 | 34 | IBM Carbon Design System |
| Accessibility | 90 | 87 | Adobe Experience Manager |
| Best Practices | 84 | 84 | Tie |
| SEO | 89 | 80 | Adobe Experience Manager |
| Security | 65 | 65 | Tie |
| TTFB | 366ms | 141ms | IBM Carbon Design System |
| Composite | 72 | 72 | Tie |
Adobe Experience Manager and IBM Carbon Design System are closely matched, each leading in different categories. Adobe Experience Manager has a composite score of 72 while IBM Carbon Design System scores 72.
Choose Adobe Experience Manager when your primary concern is SEO and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose IBM Carbon Design System 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 159 audited Adobe Experience Manager sites and 3 audited IBM Carbon Design System 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 →
Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.
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