IIS vs Windows Server AppFabric comparison

IIS and Windows Server AppFabric are both solutions in the Application Infrastructure category. IIS is ranked #1 with an average rating of 8.5, while Windows Server AppFabric is ranked #13 with an average rating of 8.7. IIS holds a 10.2% mindshare in AIS, compared to Windows Server AppFabric’s 2.2% mindshare. Additionally, 90% of IIS users are willing to recommend the solution, compared to 100% of Windows Server AppFabric users who would recommend it.

IIS

Read 61 IIS reviews

3,165 Views
2,121 Comparison Views

90% willing to recommend

Windows Server AppFabric

Read 5 Windows Server AppFabric reviews

558 Views
552 Comparison Views

100% willing to recommend

IIS

Windows Server AppFabric

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Executive SummaryUpdated on Mar 5, 2025

Windows Server AppFabric and IIS compete in application hosting. Windows Server AppFabric has an edge in pricing and support due to its integration with Microsoft's infrastructure, while IIS offers superior features and an extensive ecosystem justifying its cost.

Features: Windows Server AppFabric supports seamless application management, user-friendly networking capabilities, and efficient deployment processes. IIS is noted for its user-friendly interface, secure configurations, and extensive management console.

Room for Improvement: Windows Server AppFabric could enhance optimization for broader application types, improve real-time analytics, and update middleware components more regularly. IIS could improve by simplifying cross-platform compatibility, offering more advanced analytics tools, and enhancing scalability for smaller deployments.

Ease of Deployment and Customer Service: Windows Server AppFabric provides seamless integration within Windows environments, benefiting from Microsoft's enterprise support. IIS deployment is straightforward with automated tools and extensive documentation, offering flexibility for diverse web environments.

Pricing and ROI: Windows Server AppFabric often incurs lower setup costs through its Microsoft infrastructure integration, offering substantial ROI with enhanced performance and reduced management efforts. IIS, while potentially more expensive initially, delivers ROI through its versatility and robust feature set, best suited for diverse applications.

To learn more, read our detailed IIS vs. Windows Server AppFabric Report (Updated: December 2025).

Buyer's Guide

IIS vs. Windows Server AppFabric

December 2025

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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

IIS

Ranking in Application Infrastructure

1st

Average Rating

8.2

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

Application Server (4th)

Windows Server AppFabric

Ranking in Application Infrastructure

13th

Average Rating

8.4

Reviews Sentiment

6.5

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of January 2026, in the Application Infrastructure category, the mindshare of IIS is 10.2%, down from 12.7% compared to the previous year. The mindshare of Windows Server AppFabric is 2.2%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Infrastructure Market Share Distribution
Product	Market Share (%)
IIS	10.2%
Windows Server AppFabric	2.2%
Other	87.6%

Application Infrastructure

Featured Reviews

Krishnakumar Natarajan

Systems Engineer at Atos

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.

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Dennis Ndegwa

Senior System Administrator at Kentainers

Improved on-premise performance has supported faster, secure apps and clearer server monitoring

One thing I appreciate most about Windows Server AppFabric is because it's widely used; it's easier to get solutions online from other communities when I am stuck. Because it is widely used, it's easier to get solutions and also easier to work with. Especially after I found 2019, I have worked with 2019 and I appreciate it. It's easier to get solutions. After implementing Windows Server AppFabric, I can say I love the speed. The functionality and speed are good. Earlier, when they added more people, I could see some lagging. But now, I have no issue even if I double the users, even if I add 30% of users or any applications, it will still be fast. It increased the speed and also security. I've noticed the new one I have is good and secure. I love the security. The monitoring capabilities of Windows Server AppFabric help me improve service visibility and troubleshooting. In a day, I have to go through a lot of the logs and also the utilization. There, I see the CPU. I have to do the utilization, and I can see what is utilizing the most. By doing this, I can be able to tell what, in case I need to do an upgrade, what I might need to provide the upgrade or maybe increase in users that will not affect the operations.

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Quotes from Members

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

Pros

"The graphical user interface makes it easy for users to configure the sites."

"IIS's best features are its management console and stability."

"Windows Server IIS is stable."

"All the features of Microsoft IIS are valuable."

"The product is stable."

"The solution is easy to use."

"The solution has been reliable."

"The product is flexible."

More IIS pros

"After implementing Windows Server AppFabric, I can say I love the speed."

"The ability to seamlessly deploy, image, and patch without causing downtime is extremely helpful and user-friendly."

"It is very usable and easy to understand. Antivirus and VPN are the main features being used now. It allows my clients to access the network from home, which was very crucial because of the pandemic."

"The most valuable feature is AppFabric's hosting solution, which is what we need for running workflows."

"The product's deployment phase was very easy."

Cons

"Sometimes, we encounter difficult issues, and getting support from Microsoft to resolve those issues is not easy."

"It lacks a few performance improvement tools."

"Performance-wise, certain improvements in IIS are needed...IIS is not scalable. Its scalability is less."

"The scalability depends on how you have set it up. If you're running IIS on a single server, it might not be as capable as if you are on many in a cluster or with load balancing and so on."

"Presently, some developers do not have technical knowledge of managing IIS, so that needs to be improved in the next release."

"Scalability issues and security concerns need attention from Microsoft."

"Having no support for other than a Microsoft environment and programming languages limits the usage of IIS in many cases."

"The price of the solution could be less to improve."

More IIS cons

"The product is unable to connect with different cloud services."

"Microsoft will stop supporting the product next year, and we can't run unsupported programs in our systems."

"The most important issue I've found is the blue screen errors, particularly when customers use external displays with a P-type cable."

"Its price and licensing policy can be improved. It could be a little cheaper. Licensing is sometimes confusing. There are so many different options. It is difficult to find out what to buy or what to choose for my necessity."

Pricing and Cost Advice

"The product's price is not high."

"The tool is included with Windows."

"This solution comes included with Windows Server."

"It is licensed with your Windows installation which makes it relatively cheap if you already have a Windows Server sitting around."

"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."

"The solution’s pricing is yearly. The pricing is affordable and not high."

"The cost for IIS is already included in Windows services. We don't have to pay anything extra."

"IIS's pricing is reasonable."

More IIS pricing and cost advice

"It is expensive, and its licensing is a bit confusing."

"The product is affordable, in my opinion."

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Top Industries

By visitors reading reviews

Computer Software Company

13%

Financial Services Firm

13%

Comms Service Provider

Government

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	29
Midsize Enterprise	11
Large Enterprise	22

No data available

Questions from the Community

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,...

See all answers

What do you like most about IIS?

The product is flexible.

See all answers

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...

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What do you like most about Windows Server AppFabric?

The product's deployment phase was very easy.

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What is your experience regarding pricing and costs for Windows Server AppFabric?

I am overall satisfied with the licensing cost of Windows Server AppFabric. It's a reasonable price because I run multiple servers, so we bought the bulk one. I can say the price was fair.

See all answers

What needs improvement with Windows Server AppFabric?

I do not utilize Windows Server AppFabric's workflow management for now because that's a project that we might be looking at in the coming year, in the first or second quarter.

See all answers

Comparisons

Apache Web Server vs IIS

Compared 23% of the time

NGINX Plus vs IIS

Compared 22% of the time

Tomcat vs IIS

Compared 8% of the time

Oracle WebLogic Server vs IIS

Compared 6% of the time

Fujitsu Interstage Application Server vs IIS

Compared 3% of the time

More IIS Competitors

InterSystems Ensemble vs Windows Server AppFabric

Compared 38% of the time

Apache Web Server vs Windows Server AppFabric

Compared 28% of the time

More Windows Server AppFabric Competitors

Product Reports

Buyer's Guide

IIS

January 2026

Download IIS product report

Buyer's Guide

Application Infrastructure

January 2026

Download Windows Server AppFabric product report

Also Known As

Windows Server IIS

No data available

Overview

Internet Information Services (IIS) provides a secure, easy-to-manage, modular and extensible platform for reliably hosting websites, services and applications. With IIS, you get choice and control without giving up reliability or security.

Microsoft

Windows Server AppFabric extends Windows Server to provide enhanced hosting, management, and caching capabilities for Web applications and middle-tier services. The AppFabric hosting features add service management extensions to Internet Information Services (IIS), Windows Process Activation Service (WAS), and the .NET Framework 4. This includes Hosting Services and Hosting Administration tools that make it easier to deploy, configure, and manage Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF) based services. The AppFabric caching features add a distributed, in-memory object cache to Windows Server that makes it easier to scale out high-performance .NET applications, especially ASP.NET applications.

Microsoft

Sample Customers

Erste Bank Group, NJVC, Samsung Electronics, Sheraton Hotels and Resorts, Tata Steel Europe, Urban Software Institute

OSIsoft

Buyer's Guide

IIS vs. Windows Server AppFabric

December 2025

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