Microsoft IIS vs Kestrel

Microsoft IIS is a web server and Kestrel is a web server. Here's how they compare, how Tech Stack Detector detects each, and how many scanned websites use them.

Microsoft Internet Information Services.

Category
Server
Detection signals
1
In our index
3 websites
Official site
iis.net
Learn more about Microsoft IIS

Cross-platform web server for ASP.NET Core.

Category
Server
Detection signals
1
In our index
1 website
Official site
learn.microsoft.com
Learn more about Kestrel

How Tech Stack Detector detects each

Microsoft IIS

  • HeaderServer header identifies IIS

Kestrel

  • HeaderServer header identifies Kestrel

Websites using each

Frequently asked questions

What is the difference between Microsoft IIS and Kestrel?

Microsoft IIS is a web server (Microsoft Internet Information Services), while Kestrel is a web server (Cross-platform web server for ASP.NET Core). Both are Server technologies, so they are often considered alternatives.

Can a website use both Microsoft IIS and Kestrel?

Yes. Tech Stack Detector detects each technology independently when you scan a site, so a single page can report both Microsoft IIS and Kestrel when both are present.

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