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 April 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

"IIS fits properly for my business needs, with a lot of possibilities to upgrade the out-of-the-box functionalities, so it is really great."

"The initial setup of IIS is easy. The process takes only five minutes."

"The product is stable."

"The interface, simplicity, and ease of management are all good features that make this user-friendly."

"The solution is easy to use and connects with Microsoft, and the solution is very robust."

"This is definitely a stable solution."

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

"The solution integrates well with most Microsoft products."

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

"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."

"In the next release, the tool should be more easily integrated and configured with other provisions. The pricing should also be made cheaper since it's very expensive now."

"IIS could improve by having some features related to ASR and HTTPS certificate generation."

"It lacks a few performance improvement tools."

"The documentation of IIS could be better. They are not easily accessible. I had to use YouTube and other online resources to learn how to use the solution properly."

"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."

"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."

"IIS needs to improve its security. Its support needs to be faster and clear. The tool's licensing could be cheaper as well."

More IIS cons

"The stability of the solution needs improvement."

"The solution is kind of a necessary evil for us."

Pricing and Cost Advice

"IIS is expensive."

"The product's price is not high."

"There is a license needed for the solution."

"This solution comes included with Windows Server."

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

"I give the price of the solution a five out of ten."

"The tool's pricing is on a yearly basis."

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

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

10%

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 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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Product Reports

Buyer's Guide

IIS

March 2026

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Buyer's Guide

Application Infrastructure

March 2026

Windows Process Activation Services report

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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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