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IIS vs Oracle WebLogic Server vs Tomcat comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
6.9
Organizations found IIS provided positive ROI, cost savings, and accessibility, particularly benefiting security and cloud-based pay-as-you-go models.
Sentiment score
7.2
Oracle WebLogic Server offers long-term benefits, optimizing deployment and performance despite high initial costs and expertise requirements.
Sentiment score
8.7
Tomcat delivers quick ROI with minimal investment, offering scalability, ease of deployment, and significant time and cost savings.
It should be more user-friendly overall, because unless you know how IIS works as a Microsoft product, a system admin cannot just manage it.
 

Customer Service

Sentiment score
6.6
Many users find IIS support satisfactory but face delays, relying on community resources and Microsoft documentation for help.
Sentiment score
6.7
Oracle WebLogic Server support is reliable but costly, with mixed reviews on response times and first-level knowledge.
Sentiment score
6.3
Tomcat's support relies heavily on community and documentation, with limited formal assistance but effective community engagement and consultation services.
Microsoft provides a lot of online documentation to consult before speaking to an expert.
There are typically no significant issues.
I would rate the support from Microsoft very high because I definitely got all the help during the testing time of the development kit while we were configuring features on our on-premises server.
I would rate customer service and support from Oracle for this product as either nine or ten.
They are proactive in looking into the tickets we create in case we have unresolved queries.
 

Scalability Issues

Sentiment score
7.0
IIS scalability depends on setup and configuration, supporting thousands but requires careful planning for large deployments.
Sentiment score
7.5
Oracle WebLogic Server is scalable, suitable for large datasets; challenges may arise with configurations, but offers high ratings.
Sentiment score
7.6
Tomcat offers high scalability and adaptability, excelling in cloud environments with positive user feedback on its reliability.
I would rate the scalability of IIS as a six, mainly due to integration issues since it cannot integrate with other environments.
It depends on the server environment and the presence of a UPS for power backup.
I find Oracle WebLogic Server to be highly scalable, rating it as nine out of ten.
 

Stability Issues

Sentiment score
7.8
IIS is stable and reliable, though compatibility with non-Microsoft technologies presents occasional performance issues and improvement suggestions exist.
Sentiment score
7.9
Oracle WebLogic Server is reliable with high stability ratings but has minor memory and update-related concerns.
Sentiment score
7.9
Tomcat is stable and reliable for small applications, needing careful configuration and updates for optimal performance with high traffic.
It was secured for us, as we launched the product, and people were accessing it from India and Virginia, and we had no problem.
I would give it a nine out of ten for stability.
I would rate IIS's stability as an eight out of ten.
 

Room For Improvement

IIS faces compatibility, setup, monitoring, and cost issues, needing enhancements in scalability, security, UI, and open-source support.
Oracle WebLogic Server needs better integration, microservices support, stability, memory management, customer support, and simpler configurations.
Tomcat struggles with compatibility, scalability, speed, unfriendly interface, high memory use, and needs better security, documentation, and performance.
It should be more user-friendly because unless you know how IIS works as a Microsoft product, a system admin cannot just manage it.
It's influenced by the server's service performance.
If I compare IIS to other web servers such as Apache, which can be deployed in other environments like Linux, I find IIS is mostly used for simple things.
Using scripting allows for the creation of resources.
Tomcat needs a more robust logging error details feature; the current logging feature is available, but it should be more user-friendly.
 

Setup Cost

Enterprise buyers find IIS cost-effective with Windows Server, appreciating licensing flexibility despite some complaints about overall expense.
Oracle WebLogic Server's per-core pricing can be costly, especially compared to free alternatives like JBoss or Tomcat.
Tomcat is cost-effective, open-source, with potential additional costs for licenses and optional paid support services.
If you have a Windows license, there is no additional cost for IIS.
We never had any pricing issue, but I don't know if it is competitive or not.
 

Valuable Features

IIS is valued for its integration, security, and reliability, offering seamless web hosting for Microsoft applications.
Oracle WebLogic Server provides robust features like scalability, security, and reliability, making it ideal for enterprise applications.
Tomcat is popular for its lightweight, high performance, scalability, and open-source compatibility, ideal for Java-based applications.
It is easy to publish websites with SSL, and it integrates well within the local environment and cloud.
The configurations are simple, making it very easy to use and to set up everything.
The best features of IIS are that you can design your own website and manage it yourself, creating as many websites as you want.
I can expand the cluster by creating more servers and several clusters within the same domain.
The advantages of Tomcat include its flexibility; we can increase the heap memory and the size of sessions as per our custom needs.
 

Mindshare comparison

As of September 2025, in the Application Server category, the mindshare of IIS is 5.9%, down from 7.0% compared to the previous year. The mindshare of Oracle WebLogic Server is 18.4%, down from 26.1% compared to the previous year. The mindshare of Tomcat is 16.7%, down from 20.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Server Market Share Distribution
ProductMarket Share (%)
Tomcat16.7%
Oracle WebLogic Server18.4%
IIS5.9%
Other59.00000000000001%
Application Server
 

Featured Reviews

Krishnakumar Natarajan - PeerSpot reviewer
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.
Saikat Nag - PeerSpot reviewer
Offers efficient load distribution with a scope of high scalability
Our organization configures Oracle WebLogic Server in such a way that a load balancer becomes available. The network requests are segregated to the Oracle WebLogic Server as the managing server and different nodes are configured. Using the product as a load balancer helps automate request transfer from one non-functional node to another functional node. Due to Oracle WebLogic Server, the endpoints remain unaffected whenever a node goes down. The clustering feature enhances our organization's performance and reliability. In our organization, the health of the Oracle WebLogic Server environment is maintained and managed using Oracle Enterprise Manager (OEM). I would definitely recommend others to use Oracle WebLogic Server. Overall, I would rate the solution an eight out of ten.
Erick  Karanja - PeerSpot reviewer
Offers high availability, straightforward deployment and easy to use
Tomcat could be a little bit more innovative. Tomcat could come up with a framework that's more lightweight and purely targeted at Java applications. Some other solutions are doing better right now, maybe because they have come up with MicroProfile, which I think is moving forward. It may actually beat Tomcat because of the lightweight nature of the framework, the MicroProfile. They're coming up with new solutions. So, for the future of Tomcat and to maintain the market share they might be looking for, they need to come up with initiatives to ensure that several of us have a lightweight framework to deploy applications on.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
15%
Government
8%
University
7%
Financial Services Firm
19%
Computer Software Company
11%
Government
10%
Manufacturing Company
7%
Financial Services Firm
25%
Government
12%
Computer Software Company
12%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business28
Midsize Enterprise11
Large Enterprise20
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise5
Large Enterprise17
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise4
Large Enterprise28
 

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 architectur...
What is your experience regarding pricing and costs for IIS?
If you have a Windows license, there is no additional cost for IIS. However, you may need to pay for SSL publishing a...
What needs improvement with Oracle WebLogic Server?
There is an option to use the WebLogic console as a service, but the WebLogic scripting tool can be used for the admi...
What is your primary use case for Oracle WebLogic Server?
I primarily work from an infrastructure point of view with Oracle WebLogic Server ( /products/oracle-weblogic-server-...
What do you like most about Tomcat?
Tomcat's ease of use has positively impacted project timelines. Tomcat already has high availability – it doesn't go ...
What needs improvement with Tomcat?
Regarding improvements in Tomcat, I personally haven't used it very extensively, but all Apache products are very use...
What is your primary use case for Tomcat?
We use Tomcat for various purposes, and our company finds it to be perfect; we are getting all the solutions out of t...
 

Also Known As

Windows Server IIS
WebLogic Application Server
No data available
 

Overview

 

Sample Customers

Erste Bank Group, NJVC, Samsung Electronics, Sheraton Hotels and Resorts, Tata Steel Europe, Urban Software Institute
Colab Consulting Pty. Ltd., Infosys Ltd., Sascar, Banca Transilvania, UL, Center for Railway Information Systems, SPAR Austria Group, Reliance Commercial Finance, Industrial Bank of Korea, Al Jaber Group, Safe Water Kenya, Chhattisgarh Infotech and Biotech Promotion Society
1. Adobe Systems 2. Amazon 3. Apple 4. AT&T 5. Bank of America 6. Boeing 7. Cisco Systems 8. Citigroup 9. Dell 10. eBay 11. Facebook 12. General Electric 13. Google 14. Hewlett-Packard 15. IBM 16. Intel 17. JPMorgan Chase 18. Microsoft 19. Netflix 20. Oracle 21. PayPal 22. Salesforce 23. Samsung 24. Sony 25. Target 26. Twitter 27. Uber 28. Verizon 29. Visa 30. Volkswagen 31. Walmart 32. Yahoo
Find out what your peers are saying about Apache, Oracle, Red Hat and others in Application Server. Updated: August 2025.
866,685 professionals have used our research since 2012.