# Greymatter.io vs Illumio Segmentation: side-by-side comparison (2026)

[Greymatter.io](https://cybersectools.com/tools/greymatterio) is a commercial [microsegmentation](https://cybersectools.com/categories/microsegmentation) solution by [Greymatter.io](https://cybersectools.com/companies/greymatterio). [Illumio Segmentation](https://cybersectools.com/tools/illumio-segmentation) is a commercial [microsegmentation](https://cybersectools.com/categories/microsegmentation) solution by [Illumio](https://cybersectools.com/companies/illumio). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Greymatter.io | Illumio Segmentation |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Microsegmentation | Microsegmentation |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Greymatter.io | Illumio |
| Headquarters | – | – |

### Use cases and capabilities

| | Greymatter.io | Illumio Segmentation |
|---|---|---|
| Zero Trust Architecture | Yes | – |
| ZTNA | Yes | – |
| Microsegmentation | Yes | – |
| Network Segmentation | Yes | – |
| Cloud Native | Yes | – |
| DevSecOps | Yes | – |
| Kubernetes | Yes | – |
| Observability | Yes | – |
| Agentic AI Security | Yes | – |
| Lateral Movement | – | Yes |
| Least Privilege | – | Yes |
| Visibility | – | Yes |
| Policy | – | Yes |

### Core features

**Greymatter.io**

8 features listed. Sign in on the page to see them.

**Illumio Segmentation**

10 features listed. Sign in on the page to see them.

### Integrations

**Greymatter.io**

4 integrations listed. Sign in on the page to see them.

**Illumio Segmentation**

No integrations listed.

## Greymatter.io vs Illumio Segmentation FAQ

Common questions when comparing Greymatter.io vs Illumio Segmentation for microsegmentation.

### What is the difference between Greymatter.io and Illumio Segmentation?

**Greymatter.io**: Zero trust service mesh platform for apps, APIs, and AI across hybrid cloud, built by Greymatter.io.

**Illumio Segmentation**: Microsegmentation platform preventing lateral movement across hybrid multi-cloud, built by Illumio.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Greymatter.io and Illumio Segmentation?

**Greymatter.io** is made by Greymatter.io. **Illumio Segmentation** is made by Illumio. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Greymatter.io a good alternative to Illumio Segmentation?

Often, yes. Greymatter.io and Illumio Segmentation are both Microsegmentation products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Greymatter.io vs Avocado Protect](https://cybersectools.com/compare/avocado-protect-vs-greymatterio)
- [Greymatter.io vs PRODIC Microsegmentación](https://cybersectools.com/compare/greymatterio-vs-prodic-microsegmentacion)
- [Greymatter.io vs Qingteng Lingyu Microsegmentation Security Platform](https://cybersectools.com/compare/greymatterio-vs-qingteng-lingyu-microsegmentation-security-platform)
- [Illumio Segmentation vs Avocado Protect](https://cybersectools.com/compare/avocado-protect-vs-illumio-segmentation)
- [Illumio Segmentation vs PRODIC Microsegmentación](https://cybersectools.com/compare/illumio-segmentation-vs-prodic-microsegmentacion)
- [Illumio Segmentation vs Qingteng Lingyu Microsegmentation Security Platform](https://cybersectools.com/compare/illumio-segmentation-vs-qingteng-lingyu-microsegmentation-security-platform)

## Alternatives to each

- [See all Greymatter.io alternatives](https://cybersectools.com/alternatives/greymatterio)
- [See all Illumio Segmentation alternatives](https://cybersectools.com/alternatives/illumio-segmentation)

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Source: https://cybersectools.com/compare/greymatterio-vs-illumio-segmentation

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/greymatterio.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Greymatter.io and Illumio Segmentation: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md