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Illumio vs VMware NSX comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

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
6.3
Illumio is praised for cost-effectiveness and efficiency, offering comprehensive features that enhance ROI and improve operations.
Sentiment score
6.4
VMware NSX offers long-term financial benefits by reducing overhead and improving security, despite high initial costs and evaluation time.
I observe extensive return on investment with Illumio.
Senior Security Consultant at Orange Cyberdefense
Illumio serves as a single endpoint technology where I can implement various features, including a zero-trust network, north-to-south and east-to-west configurations, and micro-segmentation, all coming from one platform, which ultimately saves us time and money.
Security Professional at a tech vendor with 10,001+ employees
Illumio definitely demonstrates its value in money-saving capabilities, enhancing our lateral environment inside the organization and providing effectiveness overall once integrated.
Security delivery specialist at a tech vendor with 10,001+ employees
 

Customer Service

Sentiment score
5.0
Illumio customer service is generally satisfactory but needs improvement in response times and empathy for some users.
Sentiment score
6.6
VMware NSX support is knowledgeable but experiences vary; some report delays and recent service deterioration due to structural changes.
Whenever I raise a case with their support team, regardless of the priority level—P1, P2, P3, or P4—they generally reply within an hour
Security Professional at a tech vendor with 10,001+ employees
Even if we raise an issue on non-working days like Saturdays or Sundays, we receive prompt responses.
IT Specialist at Allianz
The customer support is very prominent.
Security delivery specialist at a tech vendor with 10,001+ employees
They were always helpful.
Senior VMware Administrator at Johnson Controls, Inc.
They are quick and understand things easily, so the support is aligned very effectively.
Windows Redhat Linux Vmware & Azure & Cloud & Nutanix Ahv-Vmware & Backup Senior System Administrator at AlDawaa Medical Services
Our technicians have a good support experience from the company.
Joint Staff Officer at Hellenic National Defence General Staff
 

Scalability Issues

Sentiment score
7.1
Illumio's scalability is praised for ease of expansion, seamless cloud integration, and efficient support for diverse environments and devices.
Sentiment score
7.6
VMware NSX is favored for its scalability, supporting extensive deployments across data centers with ease and efficiency.
Scaling it to a large level is not an issue for us.
Cyber Security Architect at a tech vendor with 10,001+ employees
By employing Linux scripting or other methods, I can push the policy to all devices at once, making it easy to scale.
Security Professional at a tech vendor with 10,001+ employees
Illumio's scalability is very good; it is quite easy to scale.
Cybersecurity Engineer at a tech vendor with 10,001+ employees
There is a high level of satisfaction with its ability to scale.
Senior IT Strategy Consultant at a financial services firm with 1,001-5,000 employees
 

Stability Issues

Sentiment score
8.1
Illumio is praised for strong stability, reliability, and effective use of native firewall functions to prevent disruptions.
Sentiment score
8.1
VMware NSX is praised for its high stability and reliability, with most users rating it 8-10 out of 10.
Illumio is a stable solution with no glitches or bugs reported, making it a reliable product for us.
IT Specialist at Allianz
The product performs at 99% efficiency without any showstoppers or significant issues.
Windows Redhat Linux Vmware & Azure & Cloud & Nutanix Ahv-Vmware & Backup Senior System Administrator at AlDawaa Medical Services
For stability, I would rate VMware NSX as a nine out of ten.
Services Presales Solutions Architecture - UAE & Gulf at a tech vendor with 10,001+ employees
 

Room For Improvement

Illumio users desire better integration, support, and interface, with improved automation, scalability, compatibility, security, and deployment processes.
VMware NSX struggles with high costs, complex configurations, integration issues, and requires improvements in scalability, user-friendliness, and pricing.
They need to install an agent in the container world, while Akamai Guardicore does not need to install an agent, so they have native support that Illumio lacks.
Senior Security Consultant at Orange Cyberdefense
There could also be more examples of how the automations can be done using Illumio.
Cyber Security Architect at a tech vendor with 10,001+ employees
Another improvement might be around scalability, ensuring that as organizations grow, Illumio can handle even larger, more complex environments seamlessly.
DevOps at a marketing services firm with 51-200 employees
The initial configuration and integration within our existing environment were not easy.
Senior IT Strategy Consultant at a financial services firm with 1,001-5,000 employees
The pricing for the product is another area for improvement as I'm not satisfied nowadays.
Senior VMware Administrator at Johnson Controls, Inc.
The licensing model is expensive and could be more flexible, especially after Broadcom bought VMware.
Services Presales Solutions Architecture - UAE & Gulf at a tech vendor with 10,001+ employees
 

Setup Cost

Many find Illumio's flexible pricing, despite being costly, offers a good balance of cost and capability compared to competitors.
VMware NSX pricing is seen as high; costs vary based on features used, licensing choices, and negotiation effectiveness.
I know that Illumio is the cheapest solution in the security area.
IT Specialist at Allianz
But when you compare it to firewalls, then it may not be that expensive.
Senior Security Consultant at Orange Cyberdefense
I think it's not very expensive if we compare it with Guardicore.
Cyber Security Architect at a tech vendor with 10,001+ employees
The cost of VMware NSX is considered high.
Senior IT Strategy Consultant at a financial services firm with 1,001-5,000 employees
The complexity is too high in terms of price.
Technical Manager at Allianz Cloud Private Limited
VMware NSX is a little higher in price compared to the competition.
Joint Staff Officer at Hellenic National Defence General Staff
 

Valuable Features

Illumio offers real-time control, micro-segmentation, and centralized rule management, enhancing security and visibility in dynamic environments.
VMware NSX offers micro-segmentation, scalability, automation, VM-level security, and Zero Trust support for enhanced modern networking.
Illumio helps in audit purposes by saving data and showing blocked traffic, ensuring no outside traffic is allowed.
IT Specialist at Allianz
The most important feature is the traffic review analysis, where we use the draft view and the reported view that helps us understand how the application interacts with other applications in the environment, and based on that, we are able to define the policies.
Cyber Security Architect at a tech vendor with 10,001+ employees
Illumio is a powerful tool for micro-segmentation and zero trust security that provides strong visibility, flexible policy management, and effective threat containment, enhancing an organization's internal security posture.
Cybersecurity Engineer at a tech vendor with 10,001+ employees
Micro-segmentation enhances security and provides more secure data in your data center.
Services Presales Solutions Architecture - UAE & Gulf at a tech vendor with 10,001+ employees
Consistent networking and security policies across different environments have a major and very positive impact on our business operations, allowing us to achieve the security posture we want with compliance and regulations.
Technical Manager at Allianz Cloud Private Limited
The most powerful feature of VMware NSX is the micro-segmentation that allows us to separate the different protocols our application works with.
Joint Staff Officer at Hellenic National Defence General Staff
 

Categories and Ranking

Illumio
Ranking in Cloud and Data Center Security
3rd
Ranking in Microsegmentation Software
1st
Average Rating
8.2
Reviews Sentiment
6.0
Number of Reviews
17
Ranking in other categories
Cloud Workload Protection Platforms (CWPP) (11th)
VMware NSX
Ranking in Cloud and Data Center Security
2nd
Ranking in Microsegmentation Software
2nd
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
107
Ranking in other categories
Network Virtualization (2nd), Network Traffic Analysis (NTA) (6th), Network Detection and Response (NDR) (5th), Network Automation (3rd)
 

Mindshare comparison

As of May 2026, in the Cloud and Data Center Security category, the mindshare of Illumio is 16.1%, down from 25.0% compared to the previous year. The mindshare of VMware NSX is 10.2%, down from 13.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud and Data Center Security Mindshare Distribution
ProductMindshare (%)
VMware NSX10.2%
Illumio16.1%
Other73.7%
Cloud and Data Center Security
 

Featured Reviews

Irfan Sharfi - PeerSpot reviewer
Security Professional at a tech vendor with 10,001+ employees
Micro-segmentation has transformed endpoint protection and now isolates internal threats effectively
Illumio can be improved in several areas based on our feedback. Sometimes, the PCE experiences slowness, especially when deploying around 300,000 endpoint devices. When these devices communicate within the network, loading the map or connections can cause latency, which needs improvement for a more user-friendly and faster experience. Regarding improvements to the interface, I believe we can add more features to the graphical user interface, such as proper logs. While the logs currently indicate what was blocked or allowed, clicking on a specific log should provide more information, such as which extra-scope rule is causing a denial, offering better analysis for troubleshooting.
TAIYAB HASAN - PeerSpot reviewer
Windows Redhat Linux Vmware & Azure & Cloud & Nutanix Ahv-Vmware & Backup Senior System Administrator at AlDawaa Medical Services
Has improved network visibility and security through micro-segmentation and SDN capabilities
This feature gives us flexibility and allows us to manage everything under one pane. We can see everything on one console, including network operations and behavior. Monitoring and security are among the best features for VMware NSX. For micro-segmentation, it's integrated with our endpoint security. If there are any issues with servers or VMs, it notifies us so we can isolate the servers and investigate. It provides distributed security features such as firewall and intrusion, IDS, IPS. The security level with IPS and IDS in VMware NSX is excellent. It also provides logical switching and routing which gives an extra layer for Layer 2 and Layer 3 switching requirements. The solution provides flexibility, automation, and self-service capabilities, resulting in cost savings as extensive expertise isn't required. Once automation and self-service are implemented, many tasks can be completed automatically. Load balancing is another excellent feature. Multiple servers can run on load balancing features, which is particularly useful since we have many application servers running. Sharing loads between servers provides the best performance.
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Top Industries

By visitors reading reviews
Financial Services Firm
18%
Computer Software Company
11%
Manufacturing Company
8%
Insurance Company
6%
Financial Services Firm
11%
Manufacturing Company
9%
Computer Software Company
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise1
Large Enterprise12
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise23
Large Enterprise69
 

Questions from the Community

What is your experience regarding pricing and costs for Illumio Adaptive Security Platform?
It will be the same price as the Akamai price for Guardicore. It's expensive, that's true. But when you compare it to firewalls, then it may not be that expensive.
What needs improvement with Illumio Adaptive Security Platform?
Illumio does not have much in terms of application dependency mapping features. They lack layer 7 process level segmentation, which is a limitation. In Guardicore, you have the layer 7, the process...
What is your primary use case for Illumio Adaptive Security Platform?
Illumio's use case compared to Akamai is exactly the same. For the purpose of micro-segmentation, it is the same.
What are the biggest differences between Cisco ACI and VMware NSX?
There are some very major differences between both the Products and to name a few. -Cisco ACI have physical network gear (9K Switches) where the Code runs in ACI Policy Mode & the UCS server wh...
What are the biggest differences between Cisco ACI and VMware NSX?
Once you know your way around the Cisco ecosystem, using Cisco ACI is not so difficult. It is a global product, so when you change one interface, changes are automatically reflected on every switch...
What is your experience regarding pricing and costs for VMware NSX?
When measuring complexity and costs for our organization, we consider some parameters for effectiveness. In terms of effectiveness in reducing operational complexity, I measure it to be high on the...
 

Also Known As

Illumio Adaptive Security Platform, Illumio ASP
VMware Nicira, Lastline Defender
 

Overview

 

Sample Customers

Plantronics, NTT Innovation Institute Inc.
City of Avondale, Lumeta, Kroll Ontrack, Heartland Payment Systems, Baystate Heallth, Exostar, Tribune Media, iGATE, NTT Communications, Synergent, California Natural Resources Agency, Bloomington Public Schools, Columbia Sportswear, Join Experience S.A, Schuberg Philis
Find out what your peers are saying about Illumio vs. VMware NSX and other solutions. Updated: April 2026.
893,221 professionals have used our research since 2012.