IIS vs Windows Process Activation Services comparison

IIS and Windows Process Activation Services are both solutions in the Application Infrastructure category. IIS is ranked #1 with an average rating of 8.5, while Windows Process Activation Services is ranked #28. IIS holds a 9.9% mindshare in AIS, compared to Windows Process Activation Services’s 0.9% mindshare. Additionally, 90% of IIS users are willing to recommend the solution.

IIS

Read 61 IIS reviews

3,651 Views
2,373 Comparison Views

90% willing to recommend

Windows Process Activation ...

Read 1 Windows Process Activation Services review

241 Views
241 Comparison Views

0% willing to recommend

IIS

Windows Process Activation ...

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Executive Summary

We performed a comparison between IIS and Windows Process Activation Services based on real PeerSpot user reviews.

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To learn more, read our detailed Application Infrastructure Report (Updated: March 2026).

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Application Infrastructure

March 2026

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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 Process Activation ...

Ranking in Application Infrastructure

28th

Average Rating

4.0

Reviews Sentiment

2.8

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Application Infrastructure category, the mindshare of IIS is 9.9%, down from 12.5% compared to the previous year. The mindshare of Windows Process Activation Services is 0.9%, down from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Infrastructure Mindshare Distribution
Product	Mindshare (%)
IIS	9.9%
Windows Process Activation Services	0.9%
Other	89.2%

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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it_user1226547

Senior IT Systems Administrator at a energy/utilities company with 501-1,000 employees

Central console enables us to see all of the activated and deactivated computers but it has poor alerts and frustrating technical support

The solution needs to allow for other company product licenses to be included if possible. The solution needs to include other Microsoft products, like Exchange, SharePoint, etc. Right now, it's only for Windows and Office. The solution needs to be made web-based. Right now, we have to install some tools and to use these tools we have to log into a specific server. If that server has an issue we cannot manage it. The solution needs to be able to be managed from any machine. Alerting capabilities should be improved. If a license expires or there is a breach, or something is non-compliant, the solution should send out alerts.

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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 solution is highly reliable."

"It helps scan and mitigates our vulnerabilities using the best protocols to secure our environment."

"IIS works natively with Windows Server without any issues in publishing certificates."

"IIS is quite easy to set up as it comes pre-configured, so I don't have to install anything."

"The solution integrates well with most Microsoft products."

"It's good and offers good usability."

"The most valuable feature of the solution is that it is easy to use and easy to understand."

"IIS works natively with Windows Server without any issues in publishing certificates."

More IIS pros

"The most valuable aspect of the solution is the central console, that allows you to see all of the activated and deactivated computers."

Cons

"In the next release, I would like to see better integration between the cloud environment and the on-premises environment."

"The solution's black box is not fast."

"Compared to Linux, the solution’s Windows patching is slower. I would like to improve it."

"I am using an older version of Windows Server IIS and the general management and navigation to get something done is not as straightforward as I hope it to be. The interface could be improved."

"The security must be improved."

"The product could be more compatible with Linux and macOS, particularly when applying user configuration policies."

"Sometimes if you are using IIS in large-scale scenarios, meaning that if you are deploying an application within IIS service and you are expecting a large number of users to use this application, you can sometimes find some problems, meaning that the service can shut down by itself unexpectedly if you don't configure your IIS with the correct configuration that can handle this number of users."

"The solution's stability needs improvement."

More IIS cons

"The stability of the solution needs improvement."

Pricing and Cost Advice

"IIS is expensive."

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

"There is no license needed to use the solution."

"I think it's part of the Windows Server, so you won't have any other costs to add in order to use the IIS service."

"We purchased a Microsoft Windows license and the license for IIS came in the package."

"I was using the trial version of IIS inside my virtual machines."

"The price of the cloud system is a bit high."

"The price of Windows Server IIS is expensive. They have a large user base, and they charge a little bit too much."

More IIS pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Financial Services Firm

12%

Computer Software Company

11%

Comms Service Provider

10%

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 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 needs improvement with IIS?

I see that IIS has maintained the same interface for a long time, so they could potentially use more automation or integrate Copilot into it to make it easier to use. I have not accessed or checked...

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Comparisons

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Compared 19% of the time

NGINX Plus vs IIS

Compared 18% of the time

Tomcat vs IIS

Compared 7% of the time

Red Hat JBoss Enterprise Application Platform (EAP) vs IIS

Compared 6% of the time

Oracle WebLogic Server vs IIS

Compared 5% of the time

More IIS Competitors

Microsoft .NET Framework vs Windows Process Activation Services

Compared 33% of the time

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Product Reports

Buyer's Guide

IIS

March 2026

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Buyer's Guide

Application Infrastructure

March 2026

Windows Process Activation Services report

Download Windows Process Activation Services 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 Process Activation Service generalizes the Internet Information Services (IIS) process model, removing the dependency on HTTP. All the features of IIS that were previously available only to HTTP applications are now available to applications hosting Windows Communication Foundation (WCF) services, by using non-HTTP protocols. IIS 7.0 also uses Windows Process Activation Service for message-based activation over HTTP.

Microsoft

Sample Customers

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

Bank Alfalah Ltd., Harris Farm Markets, The University of Texas at San Antonio (UTSA), Basingstoke and Deane Borough Council, John Keells Holdings, Green Prefab, 343 Industries, SM Prime, Delhi Integrated Multi-Modal Transit System Ltd.

Buyer's Guide

Application Infrastructure

March 2026

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