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. Review collected by and hosted on G2.com.

Nothing; the only thing I would like to improve is the time it takes for the telemetry. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

What I like best about Illumio is its ability to provide clear visibility into workload communications and enable granular microsegmentation without relying heavily on traditional network boundaries. The label-based policy model makes it easier to manage segmentation across complex hybrid environments, while providing strong control over east-west traffic and reducing lateral movement risk. Review collected by and hosted on G2.com.

One area that could be improved is the workload management experience. For example, the Workloads page does not make it easy to search for or work with multiple specific workloads at the same time, which can be inconvenient when managing a large environment.

Additionally, reporting and bulk operational tasks could be more flexible, especially for larger deployments. More advanced filtering, easier bulk actions, and better customization of dashboards and reports would improve the overall day-to-day operational experience. Review collected by and hosted on G2.com.

Illumio is a very well-architected platform, and it has made our onboarding process efficient and straightforward.

The approach of applying different labels to each workload, and then using those labels to understand and visualize traffic and write the right policies around it, has really sped up our deployment of micro-segmentation in our environment. Review collected by and hosted on G2.com.

The Rule Sets/Policies are written with the destination in mind, so it’s straightforward to create policy for apps that have Illumio VEN Agents installed and allow traffic into those apps/workloads. This is done by defining the Scope for the Rule Set.

It’s a bit trickier to write “outbound” Rule Sets when your workloads need to send network traffic to an app that doesn’t have a VEN Agent, since there isn’t a Scope for those types of destinations as some may not be consider to be "Workloads". Review collected by and hosted on G2.com.

Illumio is helpful because it stops attackers from moving around your network if a breach happens.

It uses Zero Trust segmentation to limit access without needing major network changes.

You get clear visibility into application traffic across data centers and cloud environments.

Overall, it reduces the blast radius of attacks, simplifies operations, and strengthens security with minimal disruption. Review collected by and hosted on G2.com.

Illumio can take time to fully tune, since defining the right policies requires upfront effort.

It focuses on segmentation, so it doesn’t replace other security tools like EDR or firewalls.

The value is highest in complex environments, which may limit impact for very small setups.

Teams may also need training to get comfortable with the model and workflows. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

I really like how Illumio makes managing any workload via Labels easy for us. When we have a new server, we just assign the labels, and everything is set up. This system means that when new servers are added, the correct policies get automatically applied without needing a manual lookup. Understanding Illumio wasn't a major challenge as it's quite straightforward for our team. Review collected by and hosted on G2.com.

Logging should really be improved. That's one part which is frustrating sometimes. I've raised support cases as well, but that didn't help. I sometimes wait for 30-40 minutes for new logs to be visible in the Illumio console. There should not be a delay of logs. If we are troubleshooting something and need Illumio logs, live logs should be available. And if not, then we should have the option to configure or send VENs logs directly to our internal SIEM or syslog server. Review collected by and hosted on G2.com.

I really appreciate Illumio’s “illumination” feature because it lets me map current traffic and understand communication patterns before I apply more restrictive policies. The different maps and dependency views make it easier to see how systems interact and give me a more complete overall picture, which is especially valuable when I’m working on network segmentation. Review collected by and hosted on G2.com.

Adopting Illumio hasn’t been that easy. Even after a year, we’re still learning how to enable and use some features effectively. I’d like our security analysts, network engineers, and sys admins to be able to leverage it more confidently. More guided, hands-on technical workshops that are available to customers would really help us fully adopt the product. Review collected by and hosted on G2.com.

Able to ringfence server and application groups. Can easily find traffic that is being blocked internally and why.. Review collected by and hosted on G2.com.

Not intuitive. Long learning curve. Needs the ability to allow traffic but block some. Only does deny all but allow some.

Policies sometimes don't work and the reason you get from Support doesn't make any sense, when other policies made the same way work just fine.

Support has gone downhill, now just normal. Review collected by and hosted on G2.com.

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. Review collected by and hosted on G2.com.

Illumio is a tool that helps you incredibly with the segmentation of your institution's network. It is very helpful Review collected by and hosted on G2.com.