Skip to content

Google Tag Manager vs Microsoft IIS

Based on 2629 and 66 real audits

View Google Tag Manager details | View Microsoft IIS details
MetricGoogle Tag ManagerMicrosoft IISWinner
Performance4145Microsoft IIS
Accessibility8887Google Tag Manager
Best Practices8684Google Tag Manager
SEO9190Google Tag Manager
Security6566Microsoft IIS
TTFB387ms513msGoogle Tag Manager
Composite7372Google Tag Manager
Performance
Google Tag Manager
41
Microsoft IIS
45
Accessibility
Google Tag Manager
88
Microsoft IIS
87
Security
Google Tag Manager
65
Microsoft IIS
66
SEO
Google Tag Manager
91
Microsoft IIS
90
Composite
Google Tag Manager
73
Microsoft IIS
72

Google Tag Manager outperforms Microsoft IIS in 5 of 7 categories, with a stronger composite score (73 vs 72). Microsoft IIS leads in performance, security.

When to choose Google Tag Manager

Choose Google Tag Manager when your primary concern is server response time and best practices. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose Microsoft IIS

Choose Microsoft IIS when your primary concern is performance and security. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 2629 audited Google Tag Manager sites and 66 audited Microsoft IIS 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 →

FAQ

Which is faster, Google Tag Manager or Microsoft IIS?
Based on real BeaverCheck audits, Microsoft IIS sites score higher on Lighthouse performance (45 vs 41 on average).
Which has better security, Google Tag Manager or Microsoft IIS?
Microsoft IIS sites score higher on security analysis (66 vs 65 on average).
Which has better accessibility, Google Tag Manager or Microsoft IIS?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Google Tag Manager (88 vs 87). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, Google Tag Manager or Microsoft IIS?
Google Tag Manager sites score higher on Lighthouse SEO signals (91 vs 90 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), Google Tag Manager or Microsoft IIS?
Google Tag Manager sites show lower Time to First Byte (387 ms vs 513 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose Google Tag Manager or Microsoft IIS for my website?
Both platforms have trade-offs. Microsoft IIS scores higher on overall composite score while Google Tag Manager may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
Audit your own site

Send Feedback