Cybersecurity · head to head
Microsoft Defender vs Namespace
Microsoft Defender
Cybersecurity
Always-on protection for you and your family's data and devices
- From
- $12/month
- Free plan
- No
Namespace
Developer Tools
The dev platform for the next 100 billion commits
- From
- Free
- Free plan
- Yes
The short version
- Only Namespace has a free tier, so it costs nothing to try first.
- Each has a real cost: Microsoft Defender defender Suite requires existing Microsoft 365 E3 or equivalent base licensing; Namespace developer plan is pay-as-you-go only; minimum usage unclear
- Prices and features above were last checked on 29 August 2026.
Where they differ
Only the attributes on which Microsoft Defender and Namespace actually diverge.
| Attribute | Microsoft Defender | Namespace |
|---|---|---|
| Starting price | $12/month | Free |
| Pricing model | subscription | Unknown |
| Free tier | No | Yes |
| Platforms | Web | Cloud, Mac, Windows, Linux |
| Category | Cybersecurity | Developer Tools |
Identical on both: user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Microsoft Defender
Nothing recorded that Namespace does not also cover.
Only in Namespace
- Devboxes
- GitHub Actions runners
- Docker builds
- Cross-invocation caching
- NVMe storage
- High-speed networking
- Multiple OS support
- Bazel and Turborepo support
What people use each for
The jobs each tool is most often brought in to do.
Microsoft Defender
- Endpoint security and threat protectionnot Namespace
- Identity and access securitynot Namespace
- Email threat protectionnot Namespace
- SaaS application security monitoringnot Namespace
Namespace
- Providing AI coding agents with cloud-based development environmentsnot Microsoft Defender
- Accelerating CI builds with faster GitHub Actions runnersnot Microsoft Defender
- Distributing builds across teams with managed infrastructurenot Microsoft Defender
- Scaling development velocity for monorepo organizationsnot Microsoft Defender
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Microsoft Defender
- Defender Suite requires existing Microsoft 365 E3 or equivalent base licensing
- Some Defender products use pay-as-you-go pricing with variable costs
- Prices vary based on Microsoft agreements, requiring sales contact for custom quotes
Namespace
- Developer plan is pay-as-you-go only; minimum usage unclear
- Team plan $100/mo is competitive but usage limits may be tight
- Devbox pricing separate at $0.004/minute could add up quickly
- Enterprise plan requires custom sales conversation
Pricing, plan by plan
Microsoft Defender
$12/month- Microsoft Defender Suite$12/month
- Endpoint protection
- Identity threat detection
- Email security
- Microsoft 365 E5 with Defender$60/month
- Includes Defender Suite
- Microsoft Teams included
- Comprehensive security and compliance
- Microsoft Defender Vulnerability Management Add-on$2/month
- Vulnerability scanning and management
- One-month free trial available
- Annual commitment required
Namespace
Free- DeveloperFree
- Pay-as-you-go
- On-demand compute
- Docker builds
- Team$100/month
- 100,000 unit minutes
- 1,000 Docker builds
- Everything in Developer
- Business$250/month
- 250,000 unit minutes
- 2,500 Docker builds
- Everything in Team
- Enterprise$undefined/custom
- Custom compute/Docker build limits
- Audit log export
- Enterprise SSO
Which should you pick?
Choose Microsoft Defender if
Nothing in the data separates Microsoft Defender from Namespace on the points above - pick on price and on how each one feels to use.
Choose Namespace if
- You need devboxes.
- You want to start without paying.
- You work on Cloud, Mac, Windows, Linux.
- You also want github actions runners.
Questions people ask
- Is Microsoft Defender or Namespace better?
- Neither clearly leads. Microsoft Defender starts at $12/month and Namespace at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Microsoft Defender or Namespace?
- Namespace has a free tier; the other does not. Paid plans start at $12/month for Microsoft Defender and Free for Namespace.
- Does Microsoft Defender or Namespace run on more platforms?
- Microsoft Defender runs on Web. Namespace runs on Cloud, Mac, Windows, Linux.
- Can I use Namespace for free?
- Yes. Namespace has a free tier, so you can try it without paying. Microsoft Defender starts at $12/month.
- What is Microsoft Defender best used for?
- Microsoft Defender is most often used for endpoint security and threat protection, identity and access security, email threat protection, saas application security monitoring. Of those, endpoint security and threat protection and identity and access security are not what Namespace is typically brought in for.
- What can Microsoft Defender do that Namespace cannot?
- Namespace covers Devboxes, GitHub Actions runners, Docker builds, Cross-invocation caching.
Answered from the vendors’ own pages
Microsoft Defender: How much does Microsoft Defender Suite cost?
Microsoft Defender Suite costs $12/user/month (paid yearly), but requires existing Microsoft 365 E3 or equivalent base licensing. It includes endpoint protection, identity threat detection, email security, and SaaS application monitoring.
SourceNamespace: How is compute usage metered on the Developer plan?
Developer plan uses pay-as-you-go billing. Devboxes bill at $0.004 per minute. Storage and caching services have separate usage-based fees. A 30-day free trial is available to test usage patterns.
SourceMicrosoft Defender: What add-ons are available for Microsoft Defender?
Microsoft Defender Vulnerability Management Add-on costs $2/user/month with annual commitment and includes a one-month free trial. Additional pay-as-you-go products include External Attack Surface Management, Cloud Security Posture Management, and Sentinel.
SourceNamespace: What is the difference between Team and Business plans?
Team ($100/mo) includes 100,000 unit minutes and 1,000 Docker builds with email support. Business ($250/mo) includes 250,000 unit minutes, 2,500 Docker builds, and high concurrency with a dedicated Slack channel.
SourceMicrosoft Defender: Is Defender included in Microsoft 365 E5?
Yes, Microsoft Defender Suite is included in Microsoft 365 E5 at $60/user/month (paid yearly with Teams). Prices may vary based on Microsoft agreements, requiring contact with Sales for customized quotes.
SourceNamespace: Can Namespace support AI coding agents?
Yes, Namespace Devboxes are specifically designed as feature-rich development environments for AI coding agents, with full tooling and performance optimization.
SourceRelated pages
More on Microsoft Defender
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