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Azul Zing vs IIS comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 5, 2025

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

Azul Zing
Ranking in Application Infrastructure
12th
Average Rating
9.6
Reviews Sentiment
5.9
Number of Reviews
10
Ranking in other categories
AI Customer Experience Personalization (24th)
IIS
Ranking in Application Infrastructure
1st
Average Rating
8.2
Reviews Sentiment
6.7
Number of Reviews
61
Ranking in other categories
Application Server (4th)
 

Mindshare comparison

As of October 2026, in the Application Infrastructure category, the mindshare of Azul Zing is 2.8%, down from 3.3% compared to the previous year. The mindshare of IIS is 6.2%, down from 10.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Application Infrastructure Mindshare Distribution
ProductMindshare (%)
IIS6.2%
Azul Zing2.8%
Other91.0%
Application Infrastructure
 

Featured Reviews

Mohakhan Khan - PeerSpot reviewer
Software Technical Expert at a tech vendor with 10,001+ employees
Real-time charging has stayed consistent and cuts GC incidents while reducing cloud costs
The best features Azul Zing offers include no stop-the-world during the full GC. No stop-the-world pauses during full GC, and we hit higher TPS with fewer JVMs -- a real win for maintenance and cost. As an online charging system, we can't afford crashes or latency spikes. Before Zing, JVMs would hang and drop from the grid on missed heartbeats. GC tuning is also out-of-the-box -- no more time consuming manual tuning like with Oracle/OpenJDK with no significant outcome.
Krishnakumar Natarajan - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"Performance of the JVM, especially the C4 Pauseless Garbage Collection, for continuous application execution is the most valuable feature."
"With minimal effort, Zing has helped us improve our latency performance dramatically."
"With minimal effort, Zing has helped us improve our latency performance drastically."
"Zing has completely solved the garbage collection problem for us."
"With minimal effort, Zing has helped us improve our latency performance dramatically."
"After using Azul Zing, it is almost a zero-incident situation because of the GCs."
"No other JVM on the market even comes close to competing with the Azul Zing."
"GC Pause times are maintained in low milliseconds, which is beneficial for applications with high volume, high memory allocation rate, and a high memory footprint, and it also increases throughput by approximately 20-25% as compared to Oracle Java Development Kit based on some tests that I have done with real applications."
"The most valuable feature of IIS is that it's free, and it works."
"It's very easy to publish."
"When you are working with Microsoft solutions, you will see that the integration with the operating system, and implementing some security features, are easier in IIS than when using another solution."
"IIS is Internet Information Services, which is application infrastructure, and the main benefits include security control where you can control different access levels and integrate with other services to manage application security."
"It helps scan and mitigates our vulnerabilities using the best protocols to secure our environment."
"The solution is easy to use and connects with Microsoft, and the solution is very robust."
"IIS is useful for the deployment of web applications...Its stability is good."
"The product is stable."
 

Cons

"Although Azul claims to have a fast warmup, we still experience higher latency for the first trade when our system starts up on Sundays."
"Although Azul claims to have a fast warmup, we still experience higher latency for the first trade when our system starts up on Sundays."
"The licensing over non-production environments considerably affects the cost of our solution as a software vendor."
"It is extremely expensive."
"We have encounter stability issues and that has been a source of frustration at times."
"However, like every other great product, there is always something that can be improved."
"The profiling tools included with Zing lag behind those available for Oracle's Java implementation."
"Can be difficult to set up for new users and complex to troubleshoot."
"The graphical user interface has room for improvement and can be more user-friendly."
"Compared to Linux, the solution’s Windows patching is slower. I would like to improve it."
"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."
"We'd like future versions to be more stable."
"The solution's scalability needs improvement."
"IIS needs to improve its security. Its support needs to be faster and clear. The tool's licensing could be cheaper as well."
"Finding different settings can be difficult if you don't know where to look."
 

Pricing and Cost Advice

Information not available
"The cost for IIS is already included in Windows services. We don't have to pay anything extra."
"I was using the trial version of IIS inside my virtual machines."
"The product's price is not high."
"The solution’s pricing is yearly. The pricing is affordable and not high."
"They offer a one-time payment model for the product license, and we pay annually for support."
"IIS's pricing is reasonable."
"The tool is included with Windows."
"The price is good."
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Top Industries

By visitors reading reviews
Financial Services Firm
22%
Manufacturing Company
13%
Construction Company
12%
Comms Service Provider
8%
Financial Services Firm
14%
Manufacturing Company
12%
Comms Service Provider
10%
Construction Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise4
Large Enterprise3
By reviewers
Company SizeCount
Small Business30
Midsize Enterprise12
Large Enterprise22
 

Questions from the Community

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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,...
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...
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...
 

Comparisons

 

Also Known As

No data available
Windows Server IIS
 

Overview

 

Sample Customers

Priceline, RBS, Credit Suisse, ING, Creditex, Nielsen, Workday, Saks Fifth Avenue, Entergy, Quotix, Puma and many more.  Visit azul.com for more.
Erste Bank Group, NJVC, Samsung Electronics, Sheraton Hotels and Resorts, Tata Steel Europe, Urban Software Institute
Find out what your peers are saying about Azul Zing vs. IIS and other solutions. Updated: September 2026.
914,938 professionals have used our research since 2012.