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Illumio Breach Containment Platform
Illumio Zero Trust Segmentation (ZTS) Platform is the only solution that handles it all: Endpoint-Endpoint, Endpoint-Server, Server-Server, as well as extensive support for cloud workloads, containers, IoT, and OT devices. Empowering organizations to be more resilient for whatever may come their way. ZTS contains the spread of breaches and ransomware across the hybrid attack surface by continually visualizing how workloads and devices are communicating, creating granular policies that only allow wanted and necessary communication, and automatically isolating breaches by restricting lateral movement proactively or during an active attack.
In addition, Illumio ZTS includes the Illumio Virtual Advisor (IVA) which provides actionable, AI driven guidance for even the most complex tasks. With IVA, teams can streamline their workflows with instant, expert-level answers to their questions. Quickly access critical information and achieve complex tasks simply by asking the virtual advisor.
Reviews (74)
Abhisheksinghtomar Abhishek
Micro-segmentation has protected critical applications and now controls lateral movement effectively
Reviewed on Sep 24, 2026
Review provided by PeerSpot
What is our primary use case?
My main use case for Illumio Segmentation is implementing it across all the applications in our organization.
A quick specific example of how I use Illumio Segmentation with one of my applications is that when we are trying to change the mode of the applications, we will do the installation on the servers of the applications. Once that is done, we see the traffic flows and write the rules across all the inbound and outbound flows. After that, we validate it with the application team and get the enforcement mode to selective or full.
What is most valuable?
Illumio Segmentation's best features are the labels that allow us to segregate all the applications based on them.
Those labels help me in my daily work and in managing my applications by allowing us to decide the role, the application name for that label, location, OS, environment, and all those things, considering there are hundreds of applications in our organization.
Illumio Segmentation has positively impacted my organization by segregating and stopping hackers from doing lateral movement from one application to another, which is a great feature that Illumio Segmentation micro-segmentation provides.
What needs improvement?
Illumio Segmentation can be improved by further implementing some plugins for tasks such as restart operations for which we don't have the right approvals to get into the server and do that work. Additionally, the GUI can be more modified with back-end operations such as restart and stop.
For how long have I used the solution?
I have been using Illumio Segmentation for the last five years, working in the Illumio domain.
What do I think about the stability of the solution?
Illumio Segmentation is stable.
What do I think about the scalability of the solution?
Illumio Segmentation's scalability is great. Currently, we have about twenty to thirty thousand servers, and we are planning to have Illumio Segmentation installed for about seventy to eighty thousand servers.
How are customer service and support?
The customer support for Illumio Segmentation is actually good. Whenever we have any issues regarding upgrade or installation, we raise it and get good support from Illumio.
Which solution did I use previously and why did I switch?
I did not previously use a different solution; Illumio Segmentation was the only option.
What was our ROI?
Currently, I haven't seen a return on investment, and I cannot share relevant metrics on fewer employees needed.
What's my experience with pricing, setup cost, and licensing?
My experience with pricing, setup cost, and licensing for Illumio Segmentation is good; it was good compared to others.
Which other solutions did I evaluate?
Before choosing Illumio Segmentation, I did not evaluate other options as it was a management-level decision. While I know there is a zero-trust architecture being implemented from other organizations, I have more insight into Illumio Segmentation only.
What other advice do I have?
The advice I would give to others looking into using Illumio Segmentation is that it is best for organizations as a host-based firewall and for lateral movement control, which is the main thing.
I would rate Illumio Segmentation a ten on a scale of one to ten because I don't have any other tools which can compete with Illumio Segmentation micro-segmentation technology, and that's why I rate it a ten, especially at this particular cost.
Igor M.
The reference solution for host-based microsegmentation
Reviewed on Aug 28, 2026
Review provided by G2
What do you like best about the product?
What I like best about Illumio is the real-time visibility into application dependencies and traffic flows. The Illumination map lets me understand how workloads communicate before writing any policy, which reduces the risk of breaking production. The label-based model makes policies readable and scalable instead of relying on IP addresses, and it works consistently across a mixed environment including Windows, Linux, and IBM i. The progressive path from visibility to test mode to full enforcement makes the Zero Trust journey low-risk and manageable.
What do you dislike about the product?
The initial learning curve can be steep, especially when building the labeling strategy. Getting the label model right from the start is critical, and it takes time to define conventions that scale well across a large and heterogeneous environment.
What problems is the product solving and how is that benefiting you?
Illumio solves the problem of lateral movement inside our network. In a traditional flat environment, once an attacker or a piece of malware gets in, it can spread easily between workloads. With microsegmentation, we contain that risk by allowing only the flows that are truly necessary between applications and environments. It also solved our lack of visibility: before Illumio, we didn’t have a clear picture of how workloads actually communicated, and now we can map dependencies precisely before enforcing any policy. This benefits us by reducing our attack surface, making audits and compliance easier to demonstrate, and giving us the confidence to isolate critical systems across a mixed fleet including Windows, Linux, and IBM i. Overall it strengthens our Zero Trust posture without forcing us to redesign the underlying network.
Education Management
Micro-Segmentation That Strengthens Defense-in-Depth
Reviewed on Aug 28, 2026
Review provided by G2
What do you like best about the product?
The micro segmentation of the network allows defense in depth of critical assets and network
What do you dislike about the product?
The complexity of the configuration of IP addresses and ports. Failure to properly implement may lead to unforeseen issues on the production workload.
What problems is the product solving and how is that benefiting you?
Illumio solves the problem of providing more granular network connectivity of critical assets.
Information Technology and Services
Easy Admin Setup, Lightweight Agent, Solid L4 Access Controls
Reviewed on Aug 28, 2026
Review provided by G2
What do you like best about the product?
• Easy configuration of the admin dashboard
• Ability to configure Layer 4 (L4) access lists
• Lightweight agent performance
• Equipped with essential and sufficient features
• Ability to configure Layer 4 (L4) access lists
• Lightweight agent performance
• Equipped with essential and sufficient features
What do you dislike about the product?
• Multi-session performance on Azure Virtual Desktop feels unstable.
• Logs are aggregated, making them difficult to read.
• Logs are aggregated, making them difficult to read.
What problems is the product solving and how is that benefiting you?
• Granular network restrictions for virtual hosts on Azure Virtual Desktop.
Transportation/Trucking/Railroad
Illumio Makes Segmentation Simple and Security Stronger
Reviewed on Aug 27, 2026
Review provided by G2
What do you like best about the product?
What I like most about Illumio is the combination of strong visibility, intuitive policy management, and effective microsegmentation. The UI makes it easy to understand application and workload communication and manage security policies across environments. It integrates well with our existing security and infrastructure ecosystem and performs reliably as the environment scales. The onboarding experience and available support also make adoption easier for the team. Its intelligent insights and recommendations help us better understand our environment and make more informed security decisions. Overall, Illumio reduces complexity while strengthening our security posture.
What do you dislike about the product?
The main area for improvement is that some of the more advanced policy configurations can have a learning curve, particularly for new administrators. A simpler guided onboarding experience and more streamlined workflows would make the platform even easier to adopt. There is also an opportunity to expand integrations and provide additional intelligent recommendations that could further reduce manual analysis and policy administration. Despite these areas for improvement, the platform remains highly capable and delivers strong value for security teams.
What problems is the product solving and how is that benefiting you?
Illumio helps us solve the challenges of gaining visibility across workloads, controlling lateral movement, and consistently enforcing zero-trust security policies. Its integrations help bring security controls into our existing environment, while reliable performance allows us to manage protection at scale. The platform reduces manual effort through centralized policy management and intelligent visibility into application dependencies and communication patterns. Strong onboarding and support help the team adopt the platform effectively, while the reduced operational complexity and improved risk visibility provide meaningful value and ROI. Overall, Illumio helps us strengthen security while making day-to-day operations more efficient.
Retail
Full Network Visibility and Control in One Place
Reviewed on Aug 27, 2026
Review provided by G2
What do you like best about the product?
We like the idea that we have full view of what is going on in our network and then can write the appropriate rules to enforce.
What do you dislike about the product?
It is an expensive product and the licensing is a bit confusing too.
What problems is the product solving and how is that benefiting you?
It is allowing us to keep our environments separate, without cross contamination between production, dev, qa, etc.
Jaime A.
Great for Microsegmentation, Significantly reducing the risk of ransomware propagation, lateral movement and unauthorized access.
Reviewed on Aug 27, 2026
Review provided by G2
What do you like best about the product?
I find Illumio incredibly useful for implementing microsegmentation, which allows only the necessary network traffic to flow between systems, helping maintain a cleaner and more secure network environment. I like using its label-based inventory model to classify services and servers according to their roles, simplifying policy management by using labels instead of IP addresses. In case of a security incident, I can quickly isolate a server by assigning a specific label with restrictive security policies. I also appreciate how Illumio streamlines policy creation by recommending required ports and communication rules, making it easy to implement policies with just a few clicks. Its maps showing the communications help me know more about the traffic in our services and identify malicious traffic. The segmentation of environments such as DMZ, Production, QA, and Development is another benefit I value, and Illumio has been very easy to install and run.
What do you dislike about the product?
Nothing.
What problems is the product solving and how is that benefiting you?
I use Illumio for microsegmentation, reducing ransomware risk and improving security. It simplifies policy management with a label-based model, enhances visibility, and streamlines policy creation. It helps identify traffic patterns, enabling quick isolation during incidents and improves understanding of service behavior.
Fulvio R.
Intuitive UI, Easy Integration, and Reliable Network Security
Reviewed on Aug 27, 2026
Review provided by G2
What do you like best about the product?
A very intuitive interface (UI), with an integration that's very easy to handle and a very reliable performance to provide the network with greater security. The price is pretty good, and the app support is really good since it comes with intelligence that can help solve problems.
What do you dislike about the product?
Illumio is a tool that helps you incredibly with the segmentation of your institution's network. It is very helpful
What problems is the product solving and how is that benefiting you?
The communication between teams that shouldn't happen, with Illumio I have the ability to maintain the necessary and required communication between teams.
Financial Services
Great Insights, Polished UI, and Strong Onboarding Support
Reviewed on Aug 25, 2026
Review provided by G2
What do you like best about the product?
Even though we haven't had it very long, so far, I really enjoy the insights feature, the user interface, and the professional services. We've been fortunate to have great support while onboarding the product.
What do you dislike about the product?
I wish the delay for the logs to hit was shorter. There's at least 10 minutes for when something happens and when it shows up in the logs.
What problems is the product solving and how is that benefiting you?
It's solving our intra-VLAN communication problem. There isn't much visibility into the intra-VLAN and it's providing insight,
Oil & Energy
Great Dashboard and Account Team, but Deployment and Map Blind Spots Need Work
Reviewed on Aug 25, 2026
Review provided by G2
What do you like best about the product?
I really like the dashboard, the account team, and the map that shows which tools are communicating with other tools.
What do you dislike about the product?
Deployment was a bit difficult and, naturally, overly dependent on other teams. I also felt the map may have had some blind spots. Since we were the engineers building the solution and not the server owner, we had to do extra research and, in some cases, learn things the hard way.
What problems is the product solving and how is that benefiting you?
Illumio has helped limit our blast radius in the event of a breach, specifically for our nuclear assets.