Developer Tools · head to head
Cortex vs Microsoft Defender
Cortex
Developer Tools
Internal developer portal that scores service ownership and maturity rather than just cataloguing services
- From
- On request
- Free plan
- No
Microsoft Defender
Cybersecurity
Always-on protection for you and your family's data and devices
- From
- $12/month
- Free plan
- No
The short version
- Each has a real cost: Cortex pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.; Microsoft Defender defender Suite requires existing Microsoft 365 E3 or equivalent base licensing
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Cortex and Microsoft Defender actually diverge.
| Attribute | Cortex | Microsoft Defender |
|---|---|---|
| Starting price | On request | $12/month |
| Pricing model | quote | subscription |
| Platforms | Web, API | Web |
| Category | Developer Tools | Cybersecurity |
Identical on both: free tier (No), 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 Cortex
- Service catalogue
- Scorecards
- Initiatives
- Self-service templates
- Query language
- Eng intelligence
- Integrations layer
- On-call and ownership mapping
Only in Microsoft Defender
Nothing recorded that Cortex does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Cortex
- A platform team that needs to prove to leadership how far a Kubernetes or framework migration has actually progressed across hundreds of servicesnot Microsoft Defender
- An organisation where ownership of production services is genuinely unknown after reorganisations or acquisitionsnot Microsoft Defender
- Enforcing production readiness standards on new services at creation time rather than at incident reviewnot Microsoft Defender
- Replacing a self-hosted Backstage that is consuming a full-time engineer or two just to stay upgradednot Microsoft Defender
Microsoft Defender
- Endpoint security and threat protectionnot Cortex
- Identity and access securitynot Cortex
- Email threat protectionnot Cortex
- SaaS application security monitoringnot Cortex
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Cortex
- Pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.
- The catalogue is only as accurate as the metadata you supply, so an organisation with inconsistent repository conventions spends its first quarter cleaning data before any scorecard means anything.
- Scorecards create political friction: publishing a per-team grade turns an engineering standard into a performance metric, and teams will game the rules rather than fix the underlying issue.
- It is closed source and hosted, so organisations with strict data residency or air-gap requirements have limited options compared with running Backstage themselves.
- Value scales with organisation size, so a company with fifty engineers and thirty services will find the catalogue tells them nothing they did not already know while still paying an enterprise contract.
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
Pricing, plan by plan
Cortex
On request- Cortex$undefined/year
- Service catalogue and ownership mapping
- Scorecards and initiatives
- Self-service templates
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
Which should you pick?
Choose Cortex if
- You need service catalogue.
- You work on Web, API.
- You also want scorecards.
Choose Microsoft Defender if
Nothing in the data separates Microsoft Defender from Cortex on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Cortex or Microsoft Defender better?
- Neither clearly leads. Cortex starts at On request and Microsoft Defender at $12/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cortex or Microsoft Defender?
- Cortex starts at On request and Microsoft Defender at $12/month.
- Does Cortex or Microsoft Defender run on more platforms?
- Cortex runs on Web, API. Microsoft Defender runs on Web.
- What is Cortex best used for?
- Cortex is most often used for a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services, an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions, enforcing production readiness standards on new services at creation time rather than at incident review, replacing a self-hosted backstage that is consuming a full-time engineer or two just to stay upgraded. Of those, a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services and an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions are not what Microsoft Defender is typically brought in for.
- What can Cortex do that Microsoft Defender cannot?
- Cortex covers Service catalogue, Scorecards, Initiatives, Self-service templates.
Answered from the vendors’ own pages
Cortex: How is Cortex different from Backstage?
Backstage is an open source framework you build and staff. Cortex is a hosted product with scorecards and initiatives out of the box and no platform team required to keep it running.
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.
SourceCortex: Is pricing published?
No. Cortex requires a sales conversation and prepares a custom proposal.
Microsoft 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.
SourceCortex: Can it self-host?
It is offered as a hosted product; on-premise arrangements are handled through sales rather than published.
Microsoft 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.
SourceCortex: What is the main adoption risk?
Bad or missing service metadata. The catalogue and every scorecard on top of it inherit whatever quality your repositories already have.
Related pages
More on Microsoft Defender
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