IBM WebSphere Application Server vs IIS comparison

Why PeerSpot?

IBM and Microsoft are both solutions in the Application Server category. IBM is ranked #5 with an average rating of 7.7, while Microsoft is ranked #4 with an average rating of 8.3. IBM holds a 7.7% mindshare in AppS, compared to Microsoft’s 8.0% mindshare. Additionally, 88% of IBM users are willing to recommend the solution, compared to 90% of Microsoft users who would recommend it.

IBM WebSphere Application S...

Read 32 IBM WebSphere Application Server reviews

5,518 Views
2,759 Comparison Views

88% willing to recommend

IIS

Read 61 IIS reviews

6,773 Views
2,912 Comparison Views

90% willing to recommend

IBM WebSphere Application S...

IIS

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Executive SummaryUpdated on Feb 2, 2025

IBM WebSphere Application Server and IIS are both in the enterprise application server sector. IIS seems to have the upper hand due to its cost-effectiveness and tight integration with Microsoft environments, while IBM WebSphere offers a comprehensive feature set appealing to complex enterprise needs.

Features: IBM WebSphere stands out for its robust scalability, Java application support, and extensive middleware integration. It offers solid data consistency, exceptional scalability with Network Deployment, and robust security features. On the other hand, IIS excels with seamless integration into Microsoft's ecosystem, efficient handling of web applications in .NET, and easy configuration with development tools.

Room for Improvement: IBM WebSphere could enhance user accessibility for deployment processes, reduce complexity in initial setup, and improve efficiency for non-Java applications. IIS can improve by offering enhanced support for non-Microsoft environments, better handling of high-volume transactions, and more advanced analytics features.

Ease of Deployment and Customer Service: IIS is recognized for its straightforward deployment within Windows environments, benefiting from consistent updates and comprehensive documentation. IBM WebSphere, despite offering powerful features, faces challenges in deployment due to its complex configuration, necessitating specialized knowledge, but it provides dedicated support to address these complexities.

Pricing and ROI: IIS is more cost-attractive with lower licensing fees, yielding favorable ROI especially for businesses entrenched within Microsoft infrastructure. Conversely, IBM WebSphere presents strong long-term ROI for organizations requiring robust, high-volume transaction processing, albeit with higher initial setup costs.

To learn more, read our detailed IBM WebSphere Application Server vs. IIS Report (Updated: September 2026).

Buyer's Guide

IBM WebSphere Application Server vs. IIS

September 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

IBM WebSphere Application S...

Ranking in Application Server

5th

Ranking in Application Infrastructure

7th

Average Rating

7.8

Reviews Sentiment

5.4

Number of Reviews

Ranking in other categories

No ranking in other categories

IIS

Ranking in Application Server

4th

Ranking in Application Infrastructure

1st

Average Rating

8.2

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of October 2026, in the Application Server category, the mindshare of IBM WebSphere Application Server is 7.7%, down from 11.0% compared to the previous year. The mindshare of IIS is 8.0%, up from 5.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Server Mindshare Distribution
Product	Mindshare (%)
IIS	8.0%
IBM WebSphere Application Server	7.7%
Other	84.3%

Application Server

Featured Reviews

Costica Florea

Senior Manager, MW & DB Automation at a computer software company with 11-50 employees

Has worked seamlessly in complex clustered environments and supports long-term development efforts

IBM WebSphere Application Server is currently at version 9.0.5.23. In recent months, they released fix 23, as they periodically release fixes. Previously, they frequently increased versions, but now they maintain 9.0.5 with different releases. It's based on Java J2EE 7 and Java SDK 1.8. Oracle announced that 2030 will be the last year when Java SDK 1.8 will be supported. Oracle currently deploys Java 2.x in parallel, with the latest being version 25. The future of IBM WebSphere Application Server remains uncertain since it's based on Java 1.8 and Java 7. I haven't found any white papers or official documentation from IBM outlining their trajectory post-2030.

Read full review

Frederic Hautecoeur

Senior System Integrations Architect at bs-team

Integrated web hosting has simplified secure services and has supported long-term growth

To be honest, I do not see any major areas for improvement. Perhaps something simple and minor. It should not go more complex than it is at the moment. The only disadvantage I see is that the documentation is a bit difficult to find. There is a lot of configuration that is very hard to get information about.

Read full review

Quotes from Members

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

Pros

"The scalability of the product is quite good."

"Starting with version 8, WAS provides a special folder called monitor deployment. Once you put the .war or .ear file in there, it is deployed automatically without human intervention. This greatly helps us in our continuous integration server. Once the deployment binary is ready, we write a script to copy it to that folder and then, voila! The application is up and running and accessible from its context root."

"One of the most valuable features might be the stability of the IBM WebSphere Application Server."

"Network Deployment is the most useful feature for scalability. It has many features within the standard WebSphere Application Server edition."

"The solution's data consistency is great and very reliable, which is critical for us in a transitional scenario and the most important feature that we count on."

"WebSphere Application Server's best features include the data subscription and connection viewer."

"IBM WebSphere Application Server is the best in terms of scalability and performance, as well as the support for managing distributed transactions."

"IBM WebSphere Application Server is the ultimate product; there is nothing superior to IBM WebSphere Application Server, and while there are other options such as Tomcat, JBoss, and Oracle's solution, IBM WebSphere Application Server stands above them all."

More IBM WebSphere Application Server pros

"The solution has been reliable."

"IIS is stable."

"The product is easy to use."

"The product is flexible."

"This is definitely a stable solution."

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

"All the features of Microsoft IIS are valuable."

"IIS has a very simple and user-friendly interface, which helps a lot in effective and efficient management."

More IIS pros

Cons

"I think that this is a good product but I think that the cloud environment could be improved. I think that the future is in the utilization of the product in a product as a service way which is something that is lacking at this moment."

"Installing or configuring a WAS server instance as a Windows Service causes a lot of problems, especially when the server needs credentials to stop."

"WebSphere is very cumbersome and not user-friendly."

"The support could be a bit more responsive."

"I find the server okay, however, using the Maker instance, the Moving instance, and the Change instance is a little bit complicated without WebSphere knowledge."

"The business logic side of it is sort of missing in the sense that if I want to track and measure velocity, it is not really available. You have to buy another application and embark on a separate implementation. Instead of having different licensing, IBM DataPower should be integrated with WebSphere. It will allow us to build the business layer and rules a lot more efficiently, rather than developing rules within the application. It would be good if we can set up the business layer through parametrization rather than development. IBM DataPower has the business rule and the controls, and if it can be integrated, it would be fantastic. It will help the application in working better in terms of security features and business logic. If you're going to use it for open banking, you will be able to monitor velocity on the total pricing."

"When compared with WebLogic, Weblogic is lighter and consumes less memory."

"IBM WebSphere Application Server hasn't changed much. It's still a heavyweight for any company compared to what you get. Unless your code base is deeply linked with it, I don't think it's a great idea to go with this solution. The current trend is toward modularity and containerization, and given the product's requirements, containerization will be difficult. There is a memory requirement as well."

More IBM WebSphere Application Server cons

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

"IIS could improve by Microsoft Windows improving the update services. We would like to be able to update all systems that are connected. The WSA service has to be in good order to accomplish this."

"It is not compatible with other platforms due to limitations."

"There are a lot of security issues with IIS, and this has become more of a concern, especially recently."

"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."

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

"The solution's security needs improvement."

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

More IIS cons

Pricing and Cost Advice

"If your application is just a web app that does not need to scale big, you can obtain a single core license of WAS Express edition, which has almost the same features with limited processing cores. If you manage a very big application farm (i.e. need to run 10 or more WAS servers) it is better to get IBM WAS Hypervisor Edition."

"The licensing cost is 1,000 of euros for a 30-year table."

"Room for improvement would only be in the licensing. As with all IBM products the licensing can be complex and expensive. Bargain well and try to get as much discount as possible. Discounts of 85% are possible. Without the discount, I think the product is overrated."

"I don't remember the price, but there are no additional costs."

"My company is on a perpetual or permanent license agreement with IBM WebSphere Application Server. There's also a pay-per-use option, but customers rarely choose that option. Most of the customers are on the perpetual license deal that's all-inclusive. As the license cost is quite expensive, I'm rating it two out of five."

"It costs more than some of the others, but, you get what you pay for."

"IBM WAS base is part of the deal when you purchase IBM FileNet P8 Content Engine."

"We pay around $200,000 annually."

More IBM WebSphere Application Server pricing and cost advice

"This solution comes included with Windows Server."

"The licensing cost is dependent on the usage."

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

"IIS is expensive."

"The yearly licensing cost is very high. The solution is very expensive."

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

"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."

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

More IIS pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

28%

Comms Service Provider

Computer Software Company

Manufacturing Company

Financial Services Firm

14%

Manufacturing Company

11%

Comms Service Provider

Construction Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	6
Large Enterprise	23

By reviewers
Company Size	Count
Small Business	30
Midsize Enterprise	12
Large Enterprise	22

Questions from the Community

What is your experience regarding pricing and costs for IBM WebSphere Application Server?

At Royal Bank, which is a major IBM customer with mainframes and numerous IBM products, they have a specific agreement regarding pricing. The pricing structure for large enterprise customers differ...

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What needs improvement with IBM WebSphere Application Server?

See all answers

What is your primary use case for IBM WebSphere Application Server?

I was part of an application where I integrated IBM WebSphere Application Server with Node.js and Blue Prism. I did a lot of REST applications because at my core, I'm a developer. Currently, I'm an...

See all answers

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,...

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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...

See all answers

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...

See all answers

Comparisons

NGINX Plus vs IBM WebSphere Application Server

Compared 12% of the time

Tomcat vs IBM WebSphere Application Server

Compared 11% of the time

JBoss Enterprise Application Platform vs IBM WebSphere Application Server

Compared 7% of the time

Red Hat JBoss Enterprise Application Platform (EAP) vs IBM WebSphere Application Server

Compared 7% of the time

IBM WebSphere Liberty vs IBM WebSphere Application Server

Compared 3% of the time

More IBM WebSphere Application Server Competitors

NGINX Plus vs IIS

Compared 11% of the time

Apache Web Server vs IIS

Compared 10% of the time

Tomcat vs IIS

Compared 8% of the time

Oracle WebLogic Server vs IIS

Compared 6% of the time

Windows Process Activation Services vs IIS

Compared 4% of the time

More IIS Competitors

Product Reports

Buyer's Guide

IBM WebSphere Application Server

October 2026

Download IBM WebSphere Application Server product report

Buyer's Guide

IIS

October 2026

Download IIS product report

Also Known As

WebSphere Application Server

Windows Server IIS

Overview

IBM WebSphere Application Server guarantees robustness and scalability, offering excellent integration with systems like CICS and supporting high-performance Java-based applications across diverse industries.

IBM WebSphere Application Server is designed for robustness and scalability, providing seamless integration with enterprise systems such as CICS. Known for its stability and security features, including SSL certificates, it ensures reliable application performance. With an intuitive GUI and Admin Console, it facilitates integration and operation even in complex deployments. However, there are user demands for improvements in areas like cost, complexity, and compatibility with non-Java technologies. Enhanced support for modern web servers and cloud services is also sought.

What are the most important features of IBM WebSphere Application Server?

Scalability: Efficiently handles large application loads and complex deployments.
Security: Offers reliable SSL certificates and robust security protocols.
Integration: Seamlessly connects with systems like CICS and supports Java-based applications.
Usability: Features an intuitive GUI and comprehensive Admin Console.
Performance: High stability and strong performance even under heavy loads.

What benefits should users look for in IBM WebSphere Application Server reviews?

Enterprise Capabilities: Known for comprehensive enterprise capabilities.
Support: Offers excellent support across diverse technology platforms.
Flexibility: Adaptability in managing applications in diverse environments.
Ease of Deployment: Facilitates deployment through command-line tools and console interfaces.

IBM WebSphere Application Server plays a significant role in industries such as banking and retail, where it supports enterprise application deployment, e-commerce sites, and financial transactions. It is used in both on-premise and cloud environments, catering to sectors like insurance and public administration.

IBM

IIS is a web server platform recognized for strong security, high performance, and seamless Windows integration. It offers an intuitive setup, emphasizing resource efficiency, scalability, and robust performance.

Internet Information Services provides a comprehensive solution for hosting and managing web applications. Known for its security and integration capabilities, it features a user-friendly interface that simplifies server management. Its application pool isolation and performance make it highly reliable. However, configuration challenges, lack of detailed documentation, and difficulties in integrating with non-Windows environments are noted. Large-scale deployments sometimes encounter clustering and scalability issues, and improvements are needed in memory management and monitoring tools. Despite these areas for improvement, compatibility with Microsoft products and zero need for separate licensing are convincing benefits for many users.

What features make IIS stand out?

Security Features: Enhances security with single sign-on and SSL support.
Performance: Designed for high efficiency and reliability.
Integration: Seamless compatibility with Windows and Microsoft products.
User Interface: Straightforward setup aids in easy management.
Scalability: Able to efficiently scale with resource demands.

What benefits should be reviewed?

Resource Efficiency: Provides cost-effective resource management.
Scalability: Easily adapts to growing application demands.
No Licensing Cost: Eliminates additional licensing expenses.
Microsoft Integration: Offers seamless use with Microsoft ecosystems.

Organizations employ IIS for a range of applications. These include hosting web applications accessible externally, managing internal projects, and supporting infrastructure such as DNS and DHCP. Companies leverage its database management capabilities, integration with Active Directory, and secure communication via SSL. In fields like healthcare, IIS supports internal information systems and on-premise deployments.

Microsoft

Sample Customers

TalkTalk, Property management group, E.SUN Bank, Ohio National Financial Services, Aviarc, Cincom Systems, FJA-US, D+H, Staples, Michigan Municipal League

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

Buyer's Guide

IBM WebSphere Application Server vs. IIS

September 2026

Free Report: IBM WebSphere Application Server vs. IIS

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