Based on 2629 and 65 real audits
| Metric | Google Tag Manager | Windows Server | Winner |
|---|---|---|---|
| Performance | 41 | 45 | Windows Server |
| Accessibility | 88 | 87 | Google Tag Manager |
| Best Practices | 86 | 85 | Google Tag Manager |
| SEO | 91 | 91 | Tie |
| Security | 65 | 66 | Windows Server |
| TTFB | 387ms | 527ms | Google Tag Manager |
| Composite | 73 | 72 | Google Tag Manager |
Google Tag Manager outperforms Windows Server in 4 of 7 categories, with a stronger composite score (73 vs 72). Windows Server leads in performance, security.
Choose Google Tag Manager when your primary concern is server response time and accessibility. Its audit data shows consistent strength in these areas across the sampled sites.
Choose Windows Server when your primary concern is performance and security. Its audit data shows consistent strength in these areas across the sampled sites.
Scores are medians across 2629 audited Google Tag Manager sites and 65 audited Windows Server 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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