What You Will Learn
- Why security teams look for alternatives to Illumio's agent-based model
- How Illumio's platform works in 2026, including its new agentless option
- What sets six leading alternatives apart, according to Forrester and Gartner
- Which alternative fits your network, from IoT-heavy environments to Cisco-based infrastructure
Why Teams Evaluate Illumio Alternatives
Illumio's Virtual Enforcement Node (VEN) secures servers by running as an agent on each workload. It can't run on pumps, readers, or sensors because most IoT, OT, and IoMT devices don't support agents.
Illumio's core product also centers on segmentation policy rather than a full device inventory. That's why many teams pair it with a separate asset discovery tool to close the IoT-OT gap. Some also describe a steep learning curve with Illumio's policy engine. Together, these limits push security teams toward alternatives.
Device Type | Runs the VEN Agent |
Servers, VMs, cloud instances | Yes |
IoT devices (cameras, sensors, building systems) | No |
OT and ICS equipment | No |
IoMT (connected medical devices) | No |
How Illumio's Platform Works in 2026
Illumio enforces policy through the VEN agent across data centers, AWS, Azure, GCP, and container workloads. In February 2026, Illumio added Insights, a module that reads real-time telemetry from Check Point and Fortinet firewalls. Insights builds traffic maps from that telemetry without installing an agent. Together, the two tools give Illumio agent-based enforcement for managed workloads and agentless visibility for hybrid environments that already run Check Point or Fortinet firewalls.
Forrester named Illumio a Leader in its Q3 2026 Wave for microsegmentation. The platform earned the highest scores of the ten vendors Forrester evaluated. Gartner Peer Insights rates it 4.8 out of 5 across 228 reviews.
Category | Detail |
Enforcement model | VEN agent for workloads plus Insights agentless telemetry with Check Point and Fortinet |
Cloud coverage | AWS, Azure, GCP, and container orchestration |
Analyst recognition | Forrester Wave Leader, Q3 2026; Gartner Peer Insights 4.8/5 (228 reviews) |
Best suited for | Data centers and cloud workloads that can run an agent |
Six Illumio Alternatives to Evaluate in 2026
Forrester's Q3 2026 Wave named three other platforms Leaders alongside Illumio: ColorTokens, Cisco Secure Workload, and Akamai Guardicore Segmentation. It named Elisity, Zero Networks, and VMware vDefend Strong Performers. Separate Forrester research on the broader microsegmentation landscape lists ORDR as a representative vendor for agentless, asset-driven segmentation. Here's how each platform approaches enforcement.
Platform | Deployment Model | Standout Strength | Additional Details |
Agentless, behavior-based | Builds policy from real device traffic across IT, IoT, OT, and IoMT | Discovers devices within 24–48 hours and integrates with 130+ firewalls, NAC platforms, and SIEM tools, including Cisco ISE, Palo Alto Networks, Fortinet, and Check Point. Enforces policy through existing network infrastructure rather than adding a new enforcement layer. | |
Host-based agent | Pairs segmentation with DNS firewall and threat hunting | Adds explainability to AI-generated policies and incorporates reputation analysis. Forrester named it a Leader in the Q3 2026 Wave. | |
Agent; SaaS or on-premises | Maps application dependencies within the Cisco security stack | Integrates directly with Cisco ISE, Secure Access, and other Cisco security tools, making it a strong fit for organizations already standardized on Cisco infrastructure. | |
Agent, agentless, or cloud-native | Spans agent, agentless, and cloud-native enforcement from one console | Can reuse an organization’s existing CrowdStrike EDR agent for enforcement instead of requiring a new one. Also holds FedRAMP Moderate authorization for federal environments. | |
Agentless, identity-based | Enforces policy at the network switch with no new hardware | Uses Virtual Edge software at existing switches and combines Active Directory, CMDB, and EDR data into a single identity profile for each device. | |
Automated, agent-based | Builds and adjusts policy with minimal manual tuning | Automatically creates and updates segmentation policies, reducing the time security teams spend writing and tuning rules by hand. |
Matching a Platform to Your Network
The right alternative depends on what your network already runs and which devices you need to cover.
Your priority | Platforms built for it |
Large numbers of IoT, OT, or IoMT devices that can't run an agent | ORDR, Elisity |
Reusing existing firewalls and NAC instead of a new enforcement layer | ORDR |
Existing Cisco network infrastructure | Cisco Secure Workload, Elisity |
Segmentation combined with active threat hunting | Akamai Guardicore Segmentation |
One console spanning agent, agentless, and cloud-native enforcement | ColorTokens Xshield |
Minimal manual policy tuning | Zero Networks |
Further Reading
- Best Microsegmentation Tools 2026
- Best Network Segmentation Tools 2026
- Device Discovery to Accelerate Microsegmentation
- AI Protect for Network Segmentation
- Forrester Microsegmentation Landscape Report
Explore Agentless Microsegmentation With ORDR
Choosing the right microsegmentation platform depends on your devices, infrastructure, and security goals. ORDR provides agentless visibility and behavior-based segmentation across IT, IoT, OT, and IoMT environments.
Learn more about ORDR and how its approach can support your network segmentation strategy.