Microsoft IIS

Microsoft, Redmond, Washington, United States

Microsoft Internet Information Services (IIS) is an extensible web server developed by Microsoft for Windows systems.

It has a modular architecture with standalone components, supports HTTP, HTTP/2, HTTP/3, HTTPS, FTP, FTPS, SMTP, and NNTP protocols, enables worker process isolation through application pools, and provides native integration with ASP.NET and ASP.NET Core.

According to our data, Microsoft IIS is the 4th most popular web server on the web.
It has 4.8% of the web server market share and is detected on 3.2% of all websites.

Statistics based on 3.7M+ analyzed websites. About this data

💸 Pricing

Microsoft IIS is available in both free and paid versions.

Free version ✔️ IIS Express
Bundled with Windows Server, which is $1,176+

📊 Rankings and Market Share

🏆 Microsoft IIS Awards

⚡ Sites Using Microsoft IIS

We have data on 120,248 websites that use the Microsoft IIS web server. Here is a list of some of the top ranked ones.

The highest rated site using Microsoft IIS is outlook.com.

#WebsiteRankCountryLanguage
1 outlook.com #74 United States English
2 stackoverflow.com #101 United States English
3 betway.co.za #227 Guernsey
4 wb.gov.in #261 India English
5 sagepub.com #342 United States English
6 tjsp.jus.br #474 Brazil Brazilian Portuguese
7 computrabajo.com #527 Spanish
8 stackexchange.com #1,002 United States English
9 chess-results.com #1,129 India English
10 chosun.com #1,133 Korea Korean
11 powerbi.com #1,166 United States English
12 anthology.com #1,168 English
13 portal.gov.cz #1,400 Czech Republic Czech
14 ct.gov #1,589 United States English
15 oregon.gov #1,617 United States American English
16 paylocity.com #1,783 United States English
17 i-ready.com #1,841 English
18 cancer.org #2,045 United States English
19 uchicago.edu #2,056 United States English
20 missyusa.com #2,246 Korea Korean

📈 Usage Statistics

Most of the sites that use Microsoft IIS:

Most of the sites using Microsoft IIS are from the United States, China, and the United Kingdom.

  • United States 23.5%
  • China 7.1%
  • United Kingdom 6.3%
  • Italy 5.9%
  • Turkey 4.2%
  • India 4%
  • Netherlands 2.7%
  • Czech Republic 2.5%
  • Brazil 2.4%
  • Other 41.4%

Most Microsoft IIS users speak English, Chinese, or Italian.

  • English 52.4%
  • Chinese 7.8%
  • Italian 4.6%
  • Spanish 4%
  • Turkish 3.6%
  • Portuguese 2.8%
  • German 2.8%
  • Czech 2.2%
  • Dutch 2%
  • Other 17.8%

The Microsoft IIS web server is especially popular on .com and .org top-level domains.

  • .com 41.6%
  • .org 6%
  • .it 3.7%
  • .net 3.1%
  • .co.uk 2.7%
  • .cn 1.8%
  • .dk 1.6%
  • .nl 1.6%
  • .se 1.4%
  • Other 36.5%

The primary market segments for websites utilizing Microsoft IIS include business, marketing and merchandising, and education and reference.

  • Business 22.4%
  • Marketing/Merchandising 9.3%
  • Education/Reference 9.3%
  • Online Shopping 6.2%
  • Travel 4.3%
  • Health 4.3%
  • Internet Services 4.2%
  • Software/Hardware 3.8%
  • Public Information 3.7%
  • Other 32.5%

🔢 Microsoft IIS Versions

The most common version of Microsoft IIS is 10.0, used by 81.1% of sites where versions were detected. In addition, 13.2% of sites use Microsoft IIS 8.5, and 3.3% use Microsoft IIS 7.5.

  • 10.0 81.1%
  • 8.5 13.2%
  • 7.5 3.3%
  • 8.0 1.3%
  • 6.0 0.6%
  • 7.0 0.3%
  • 5.0 0.2%
  • 10 0.02%

🕵️ Similar Technologies

These are some of the best Microsoft IIS alternatives.

RankName
1
Nginx
Seattle, Washington, United States

A lightweight, high-performance open-source HTTP server and reverse proxy designed for handling large volumes of concurrent connections with low memory usage.

FreeOpen source$3,500+/year
2
Apache
Wilmington, Delaware, United States

A cross-platform open-source web server that has been available since 1995.

FreeOpen source
3
LiteSpeed Web Server
Newtown Square, Pennsylvania, United States

A high-performance commercial web server that can operate as a drop-in replacement for Apache, using the same configuration files and control panel integrations.

FreeOpen source$10+/month
5
OpenResty
Millbrae, California, United States

An Nginx distribution that bundles the LuaJIT interpreter to run Lua scripts directly inside the web server.

FreeOpen source
8
Kestrel
Redmond, Washington, United States

An open-source, cross-platform web server for ASP.NET Core that can serve HTTP requests on Windows, Linux, and macOS.

FreeOpen source

🆚 Compare Alternatives

Compare Microsoft IIS to…

💬 Frequently Asked Questions

What is the company behind Microsoft IIS?

Microsoft IIS is owned by Microsoft Corporation, headquartered in Redmond, Washington, United States.

Can I use Microsoft IIS for free?

Yes, there is a free version with limited functionality.

Which country uses Microsoft IIS the most?

The majority of Microsoft IIS users are from the United States.

Who uses Microsoft IIS?

According to our data, Microsoft IIS is used on thousands of sites, including such established ones as outlook.com, stackoverflow.com, and betway.co.za.

Is Microsoft IIS used on government websites?

Yes, for example, it is used by wb.gov.in, portal.gov.cz, and ct.gov. Overall, we found Microsoft IIS on 744 government sites in the United States.

Do academic institutions use Microsoft IIS?

Yes, quite a few! The most prominent of these is uchicago.edu. Overall, we know of 550 academic websites in the United States that use Microsoft IIS.

How does Microsoft IIS compare to its competitors?

Microsoft IIS is one of the most popular web servers, second only to Nginx, Apache, and LiteSpeed Web Server.

What are the alternatives to Microsoft IIS?

Alternatives and possible competitors to Microsoft IIS may include Kestrel, Nginx, and Apache.

👉 See Also

🗃️ About This Data