# Illumio > Illumio is a cybersecurity company specializing in Zero Trust Segmentation (ZTS). It provides a platform that stops breaches from spreading across cloud, data center, and endpoint environments by visualizing traffic and applying granular security policies. - URL: https://optimly.ai/brand/illumio - Slug: illumio - BAI Score: 88/100 - Archetype: Challenger - Category: Cybersecurity - Last Analyzed: April 11, 2026 ## Competitors - Zscaler (https://optimly.ai/brand/zscaler) ## Also Referenced By - Airgap Networks Nutanix (https://optimly.ai/brand/airgap-networks-nutanix) - Air Gapping Infrastructure (https://optimly.ai/brand/air-gapping-infrastructure) ## Buyer Intent Signals Problems: Traditional Network Zoning: Using basic VLANs, ACLs on switches, and traditional perimeter firewalls to segment the network. | Manual Host-based Firewall Management spinning: Using script-based tools like iptables or Windows Firewall across individual servers manually. | Flat Network Acceptance: Accepting the risk of a "flat network" where a single breach can result in unrestricted lateral movement. Solutions: best zero trust microsegmentation tools | prevent lateral movement in data centers | ransomware containment software | zero trust segmentation for aws and azure | host-based firewall management enterprise | Cloud-Native Security Groups: Native security groups within AWS, Azure, or Google Cloud to control traffic between instances.