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Apache Web Server vs IIS comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 5, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Apache Web Server
Ranking in Application Infrastructure
5th
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
23
Ranking in other categories
No ranking in other categories
IIS
Ranking in Application Infrastructure
1st
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
59
Ranking in other categories
Application Server (4th)
 

Mindshare comparison

As of October 2025, in the Application Infrastructure category, the mindshare of Apache Web Server is 11.4%, up from 10.3% compared to the previous year. The mindshare of IIS is 10.5%, down from 12.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Infrastructure Market Share Distribution
ProductMarket Share (%)
IIS10.5%
Apache Web Server11.4%
Other78.1%
Application Infrastructure
 

Featured Reviews

Sakthivel Veeramuthu - PeerSpot reviewer
Easy to optimize for high performance and handle heavy traffic
Most of the features I liked were related to the performance during peak hours. Because I needed to optimize the Apache web server to run it as a high performer during my customers' usage, then I needed to reduce my Apache web server resource usage for that. So that part of the thing is what I was more interested in doing. So, I mainly liked the performance and security.
Krishnakumar Natarajan - PeerSpot reviewer
Designs and manages multiple websites while ensuring data backup and disaster recovery
I have experience with AWS, and I am most familiar with the server environment, as we just use the server environment and then use Microsoft products on an AWS environment. I have experience with Windows Server IIS, which I ran on my own on-premise data center. The website was developed and then hosted, and through IIS, we managed the servers. The manageability within the IIS environment is not very difficult. For server management, you need to ensure data backup, data restore, and you have a DR configured to keep the database intact. It was done on-premises, so I had no problem doing that. If you have to go to the cloud, then you should have the storage connected to the IIS server and also have a DR set up for that. I didn't use Microsoft Azure tools, but since it is a Microsoft product, Azure has all the portability, so you don't have to worry about compatibility on the cloud. On a scale of 1-10, I would rate this solution a 10.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Most of the features I liked were related to the performance during peak hours."
"The best thing about Apache is that it is open-source, so implementing my platform on-premises is less expansive than other solutions."
"It's very stable, and it hosts one of the biggest of many biggest web applications in the world."
"The solution's most valuable feature is reporting."
"Apache Web Server is free of cost."
"The product's initial setup phase is straightforward."
"The most significant advantage is the ability to swiftly enable HTTPS services when my DNS is configured correctly."
"It's reliable, configurable and generally secure."
"The solution is easy to use."
"The product's initial setup phase is straightforward."
"IIS is stable."
"The most valuable feature of IIS is it does not consume a lot of resources. It does not consume a lot of resources, such as memory."
"IIS is useful for the deployment of web applications...Its stability is good."
"IIS is scalable."
"The solution is simple and very easy to manage compared to Linux."
"All the features of Microsoft IIS are valuable."
 

Cons

"By optimizing the infrastructure to allow the webserver to directly handle queries from memory—particularly by prioritizing the storage of queries in memory and processing them through the web server interface—I could potentially cut down the required instances from five hundred to two hundred."
"There isn't a dedicated customer support available"
"The interface has room for improvement."
"The major issue occurs with ports. So, I would like to see easier port management."
"The product's initial setup process could be easier for users."
"There is a security-related problem that depends on the web server's configuration."
"The GUI for the less experienced users needs some improvement. For some companies, it is hard to configure it if they have not had any experience."
"It would be great if technical support for Apache were available in Iran. It is a very important need."
"At the moment, we have big problems with stability, and I'm not very happy at the moment. So, the stability could be improved."
"The documentation isn't very good and the options are very complex."
"The solution must improve the integration between its databases."
"The only issue I've encountered is with certificates not working fine sometimes."
"Microsoft products can only work within the Windows environment, which limits their versatility."
"Scalability issues and security concerns need attention from Microsoft."
"The solution is slow and could have better performance."
"IIS could improve by having some features related to ASR and HTTPS certificate generation."
 

Pricing and Cost Advice

"There is no licensing cost for the product."
"It is a free-of-cost solution."
"The apache software is free, open-source."
"It is an open-source solution."
"The price is good."
"The licensing cost is dependent on the usage."
"I was using the trial version of IIS inside my virtual machines."
"The product's price is not high."
"Users can get a subscription-based license or a perpetual license for IIS."
"The yearly licensing cost is very high. The solution is very expensive."
"There is a license needed for the solution."
"IIS comes along with an OS license from Microsoft. Others can opt for a perpetual-based licensing model to be able to use the system."
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Top Industries

By visitors reading reviews
Computer Software Company
18%
Financial Services Firm
15%
Government
9%
Manufacturing Company
7%
Computer Software Company
16%
Financial Services Firm
14%
Government
8%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise8
Large Enterprise10
By reviewers
Company SizeCount
Small Business28
Midsize Enterprise11
Large Enterprise21
 

Questions from the Community

What do you like most about Apache Web Server?
The product's initial setup phase is straightforward.
What is your experience regarding pricing and costs for Apache Web Server?
Apache Web Server is a free product, with no associated setup costs or licensing fees.
What needs improvement with Apache Web Server?
There is no need for substantial improvements as we have a dedicated team managing the server, ensuring everything runs smoothly.
Which is better - IIS or NGINX Plus?
IIS is a flexible, secure, and manageable web server to host anything on the web. IIS’s scalable and open architecture can handle the most demanding tasks. From media streaming to web applications,...
What is your experience regarding pricing and costs for IIS?
For the pricing, setup cost, and licensing for IIS, as a Microsoft product, I didn't think much about separately purchasing an IIS product as it is part of Microsoft Windows. We bought a developmen...
 

Also Known As

Apache HTTP Server
Windows Server IIS
 

Overview

 

Sample Customers

Cisco, Intuit, General Electric, Adobe, VMware, PayPal, HP, EMC, eBay, Apple, SAP, Qualcomm, SanDisk, Allstate, FedEx
Erste Bank Group, NJVC, Samsung Electronics, Sheraton Hotels and Resorts, Tata Steel Europe, Urban Software Institute
Find out what your peers are saying about Apache Web Server vs. IIS and other solutions. Updated: September 2025.
868,706 professionals have used our research since 2012.