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 4.6% of the web server market share and is detected on 3.1% of all websites.

Statistics based on 3.8M+ 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 119,159 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 #683,364 United States English
2 stackoverflow.com #15,428 United States American English
3 betway.co.za #458 Guernsey
4 wb.gov.in #194 India English
5 tjsp.jus.br #397 Brazil Brazilian Portuguese
6 computrabajo.com #399 Spanish
7 stackexchange.com #1,917 United States English
8 chess-results.com #1,191 India English
9 chosun.com #1,448 Korea Korean
10 powerbi.com #1,010 United States English
11 anthology.com #5,851 English
12 portal.gov.cz #532 Czech Republic Czech
13 ct.gov #7,692 United States English
14 oregon.gov #5,943 United States American English
15 paylocity.com #1,571 United States English
16 i-ready.com English
17 cancer.org #11,606 United States English
18 uchicago.edu #3,854 United States English
19 missyusa.com #5,476 Korea Korean
20 mponline.gov.in #1,470 India English

📈 Usage Statistics

Most of the sites that use Microsoft IIS:

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

  • United States 24%
  • United Kingdom 6.4%
  • Italy 6.1%
  • China 4.4%
  • Turkey 4.3%
  • India 4%
  • Netherlands 2.8%
  • Czech Republic 2.7%
  • Brazil 2.5%
  • Other 42.8%

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

  • English 53.6%
  • Chinese 5.5%
  • Italian 4.7%
  • Spanish 4.2%
  • Turkish 3.7%
  • Portuguese 2.9%
  • German 2.9%
  • Czech 2.3%
  • Dutch 2.1%
  • Other 18.1%

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

  • .com 41.2%
  • .org 6.2%
  • .it 3.7%
  • .net 3.2%
  • .co.uk 2.8%
  • .cz 1.9%
  • .dk 1.6%
  • .nl 1.6%
  • .se 1.6%
  • Other 36.2%

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

  • Business 22.3%
  • Marketing/Merchandising 9.4%
  • Education/Reference 9.1%
  • Online Shopping 6.3%
  • Travel 4.3%
  • Health 4.3%
  • Internet Services 4.1%
  • Software/Hardware 3.8%
  • Public Information 3.7%
  • Other 32.7%

🔢 Microsoft IIS Versions

The most common version of Microsoft IIS is 10.0, used by 83.9% of sites where versions were detected. In addition, 10.7% of sites use Microsoft IIS 8.5, and 3% use Microsoft IIS 7.5.

  • 10.0 83.9%
  • 8.5 10.7%
  • 7.5 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
6
Tomcat
Wilmington, Delaware, United States

An open-source Java application server that implements the Jakarta Servlet, Jakarta Server Pages, Jakarta Expression Language, and Jakarta WebSocket specifications.

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
19
Oracle iPlanet Web Server
Austin, Texas, United States

An enterprise web server designed for medium and large business applications and high-volume Java-based web environments.

Free

🆚 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 775 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 548 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 Tomcat.

👉 See Also

🗃️ About This Data