[advisory]List reference prices. The figures on this page are the vendor’s published list or reference prices, not negotiated quotes. Actual pricing varies with volume, contract term, and reseller discount, and should not be used as a basis for procurement decisions. Always request a direct quote from the vendors you shortlist.
This comparison is decided by one question more than any other: are you already on Microsoft 365 E5? If yes, Defender XDR is effectively a sunk cost and almost impossible for Falcon to beat on price. If no, the gap narrows and the comparison becomes a genuine per-seat contest. Figures below are the vendors’ published list prices, checked 30 October 2026 on microsoft.com and crowdstrike.com/pricing.
Side by side on cost
| Scenario | Defender XDR | Falcon Enterprise |
|---|---|---|
| Already on E5 | $0 incremental | $184.99 / device / yr |
| On E3 (Defender Suite add-on) | $12 / user / mo | $184.99 / device / yr |
| Servers / cloud | Separate (Defender for Servers / Cloud) | Per-device, same model |
| OS breadth edge | Windows / Microsoft 365 | Mixed Windows / macOS / Linux |
Where each wins on price
Defender wins cost when
- You already license Microsoft 365 E5; the stack is sunk cost.
- Your estate is predominantly Windows and Microsoft 365.
- You want endpoint, email, identity, and SaaS detection from one bundle.
Falcon wins cost when
- You are not on E5 and would not buy it for productivity reasons.
- Your estate is heavily macOS or Linux where Falcon's agent leads.
- You want a single agent independent of Microsoft licensing changes.
// Q&A appendix
Frequently asked questions
01.Is Microsoft Defender XDR cheaper than CrowdStrike Falcon?+
For an organisation already licensing Microsoft 365 E5, Defender XDR is effectively free because the licence is sunk, which Falcon cannot match at its published $184.99 per device per year for Falcon Enterprise. For an organisation not on E5, the comparison narrows: Microsoft Defender Suite lists at $12 per user per month ($144 per user per year) on a Microsoft 365 E3 base, against Falcon Enterprise per device. Microsoft no longer shows standalone prices for Defender for Endpoint, Identity or Cloud Apps, so Defender Suite or E5 is the realistic route. The deciding question is almost always whether you are already on E5.
02.Does the E5 licence really make Defender XDR free?+
Not literally free, but the marginal cost is effectively zero if you would buy Microsoft 365 E5 anyway for productivity, Teams, and compliance. Defender for Endpoint P2, Office 365 P2, Identity, and Cloud Apps are all bundled inside E5 at $60 per user per month (up from $57 in the 1 July 2026 uplift). If E5 is already in your budget for non-security reasons, adding a third-party XDR like Falcon means paying twice for overlapping endpoint detection. That sunk-cost dynamic is why Microsoft-stack shops rarely shortlist Falcon.
03.When is CrowdStrike Falcon worth paying for over Defender XDR?+
Falcon is worth the extra spend when your endpoint estate is heavily non-Windows (significant macOS or Linux), when you want a single agent independent of Microsoft licensing changes, when you value bundled managed threat hunting, or when you need detection depth and a best-of-breed agent that outweighs the Defender bundle economics. For a predominantly Windows and Microsoft 365 estate, the cost case for Falcon over an already-paid Defender stack is hard to make.
04.How do server and cloud workloads change the comparison?+
The per-user Defender XDR stack does not cover servers and cloud workloads; those are Defender for Servers (Plan 2 is $0.02 per server per hour on the Azure retail price list) and Defender for Cloud, billed separately. CrowdStrike Falcon covers servers under the same per-device model. For server-heavy estates the gap narrows because Defender's per-server lines stack on top of the per-user stack, so model both the user and server lines before concluding Defender is cheaper.