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Microsoft ASP.NET vs Microsoft IIS

Based on 119 and 61 real audits

View Microsoft ASP.NET details | View Microsoft IIS details
MetricMicrosoft ASP.NETMicrosoft IISWinner
Performance4044Microsoft IIS
Accessibility8888Tie
Best Practices8484Tie
SEO9090Tie
Security6465Microsoft IIS
TTFB446ms534msMicrosoft ASP.NET
Composite7271Microsoft ASP.NET
Performance
Microsoft ASP.NET
40
Microsoft IIS
44
Accessibility
Microsoft ASP.NET
88
Microsoft IIS
88
Security
Microsoft ASP.NET
64
Microsoft IIS
65
SEO
Microsoft ASP.NET
90
Microsoft IIS
90
Composite
Microsoft ASP.NET
72
Microsoft IIS
71

Microsoft ASP.NET and Microsoft IIS are closely matched, each leading in different categories. Microsoft ASP.NET has a composite score of 72 while Microsoft IIS scores 71.

When to choose Microsoft ASP.NET

Choose Microsoft ASP.NET when your primary concern is server response time. 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 119 audited Microsoft ASP.NET sites and 61 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, Microsoft ASP.NET or Microsoft IIS?
Based on real BeaverCheck audits, Microsoft IIS sites score higher on Lighthouse performance (44 vs 40 on average).
Which has better security, Microsoft ASP.NET or Microsoft IIS?
Microsoft IIS sites score higher on security analysis (65 vs 64 on average).
Which has better accessibility, Microsoft ASP.NET or Microsoft IIS?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor Microsoft ASP.NET (88 vs 88). 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, Microsoft ASP.NET or Microsoft IIS?
Microsoft ASP.NET sites score higher on Lighthouse SEO signals (90 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), Microsoft ASP.NET or Microsoft IIS?
Microsoft ASP.NET sites show lower Time to First Byte (446 ms vs 534 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 Microsoft ASP.NET or Microsoft IIS for my website?
Both platforms have trade-offs. Microsoft IIS scores higher on overall composite score while Microsoft ASP.NET 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.
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