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 7.3% mindshare in AppS, compared to Microsoft’s 7.8% 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

5,149 Views
2,575 Comparison Views

88% willing to recommend

IIS

Read 61 IIS reviews

6,460 Views
2,713 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

6th

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

2nd

Average Rating

8.2

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of September 2026, in the Application Server category, the mindshare of IBM WebSphere Application Server is 7.3%, down from 11.1% compared to the previous year. The mindshare of IIS is 7.8%, up from 5.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Application Server Mindshare Distribution
Product	Mindshare (%)
IIS	7.8%
IBM WebSphere Application Server	7.3%
Other	84.9%

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

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.

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 product offers good performance."

"The thing about WebSphere, as opposed to other ones that I am aware of such as JBoss and Liberty, is that WebSphere has the most comprehensive scaffolding available to it."

"IBM WAS is extremely scalable. It is easy to add additional servers and to divide the load over servers in all kinds of ways."

"The solution is robust, and the connection management and the scalability which IBM provides to the stack are also valuable."

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

"The most valuable features are its user-friendliness and reliability in terms of application hosting."

"The solution is very stable and robust."

"The scalability of the product is quite good."

More IBM WebSphere Application Server pros

"My advice to others is this is a simple-to-use solution and you can find items with ease."

"What I like the most is that it is easy to use."

"The solution is easy to use."

"The product is easy to use."

"IIS is useful for the deployment of web applications...Its stability is good."

"It is a lightweight web host that is easy to configure for simple webpages."

"The solution is simple and very easy to manage compared to Linux."

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

More IIS pros

Cons

"The current trend is to move to Liberty because of the portability of its cloud and its Kubernetes, which containerize the application."

"It should be able to serve more concurrent requests like Oracle. Oracle has more powerful stability, availability, and real-time serving."

"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."

"Initial setup is very simple. Just use the IBM Installation Manager and add the packages. The install wizard takes care of the rest. The only thing that can be difficult is to find the right packages on the IBM website, because of all the changes that IBM does on its website(s)."

"When we run into memory or locking issues, we resort to using third-party tools. However, it would be preferable to have native tools for debugging this type of problem."

"Stability is frustrating. It goes down after a specific number of user connections."

"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."

"The solution could improve the integration."

More IBM WebSphere Application Server cons

"I would like to see NLB features in IIS."

"There is an issue with the network. The tool's price is also high."

"The documentation is not very detailed."

"This solution needs to be easier for cases where you want to have an IIS cluster."

"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."

"The solution's security needs improvement."

"The documentation is not very detailed. They need to improve it and add to it. They should ensure there are lots of visuals to help users better understand the solution."

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."

"We pay around $200,000 annually."

"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."

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

"It's expensive."

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

"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."

"We used to pay about $100,000-$120,000 US or somewhere around there. That was a bit cost-prohibitive for us to continue."

More IBM WebSphere Application Server pricing and cost advice

"They offer a one-time payment model for the product license, and we pay annually for support."

"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."

"There is an annual license to use this solution and the price could be better."

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

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

"IIS is expensive."

"We pay a yearly licensing fee for the solution."

"The price is good."

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

Construction Company

Financial Services Firm

13%

Manufacturing Company

11%

Comms Service Provider

10%

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...

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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 12% of the time

Apache Web Server vs IIS

Compared 11% of the time

Tomcat vs IIS

Compared 8% of the time

Oracle WebLogic Server vs IIS

Compared 6% of the time

Oracle Application Server vs IIS

Compared 4% of the time

More IIS Competitors

Product Reports

Buyer's Guide

IBM WebSphere Application Server

September 2026

Download IBM WebSphere Application Server product report

Buyer's Guide

IIS

September 2026

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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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