Huntress vs Microsoft Defender for Business: you already own EDR

Most articles comparing these two get the question backwards. They ask whether Huntress detects more than Microsoft Defender. For a business already paying for Microsoft 365 Business Premium, that is not the decision in front of you.

You already own EDR. You have owned it since you bought Business Premium. The decision is whether anyone is reading what it produces.

Disclosure: Obsidian Ridge is a Huntress MSSP partner and delivers Huntress-powered managed detection and response. Read the recommendation below with that in mind. The "Defender is enough" case below is one we make to prospects regularly, and lose deals on deliberately.

What you already have

Microsoft's own capability table lists Defender for Business as including endpoint detection and response, automated investigation and remediation, core vulnerability management, attack surface reduction, next-generation protection and cross-platform coverage for Mac, iOS and Android. EDR and threat analytics carry an "optimized" marker, meaning a reduced version rather than parity with Defender for Endpoint Plan 2. (Microsoft Learn, retrieved 28 August 2026.)

The pricing, from Microsoft's own page on the same date: $3.00 per user per month paid yearly standalone, or bundled into Microsoft 365 Business Premium at $22.00 per user per month paid yearly. Servers cost $3 per server instance per month, capped at 60 licences. (Microsoft.)

That is a genuinely good deal, and anyone telling you Defender is not a real product has not looked at it recently. Microsoft caps it at 300 users and five devices per user, with no minimum.

What you do not have, and cannot buy

Here is the part almost nobody checks.

Defender for Business ships no managed service. No analyst at Microsoft looks at your queue. Microsoft sells that capability as Defender Experts MDR — "Expert analysts manage your Microsoft Defender incident queue and handle triage and investigation on your behalf." (Microsoft Learn.)

But read its prerequisites. Defender Experts MDR requires at least one of Defender for Endpoint Plan 2, Defender for Office 365 Plan 2, Defender for Identity, Defender for Cloud Apps, or Entra ID P2. (Microsoft Learn, retrieved 28 August 2026.)

Defender for Business does not appear on that list. If Business Premium is your licence, Microsoft's own managed service is not available to you at that tier. Microsoft does not publish a price for it either — the page carries "Contact Sales."

So the small business that bought Business Premium specifically because it bundled security ends up in a position that is easy to miss: excellent telemetry, a real EDR, and no path to having anyone watch it except hiring, contracting, or doing it yourself.

Microsoft is upfront about who they expect to operate it. Their FAQ recommends working with a Microsoft partner, and the product is positioned around your own IT administrator with wizard-driven defaults. (Microsoft Learn.)

What changes on Monday morning

Defender for Business alone. An incident appears in the Microsoft 365 Defender portal. It is a real incident with real evidence and a decent automated investigation attached. It sits there until an administrator opens the portal, reads it, and decides whether the automated remediation went far enough. At 3am, nobody opens the portal.

Defender plus a managed layer. The same signal goes to an analyst first. Most incidents are resolved without you learning they happened. The ones that survive arrive as a decision already made: this device, this account, do this now.

The honest framing of the trade is not detection quality. Microsoft's detection is good. It is that detection produces work, and somebody has to do the work.

Huntress does not replace Defender

This is the second thing that gets misread. Huntress Managed EDR can manage Microsoft Defender Antivirus rather than displace it, which is why "rip and replace" is the wrong mental model. We wrote about that stack specifically in best managed EDR for Microsoft Defender users.

Huntress publishes Managed EDR at $8.99 per endpoint per month on its own pricing page, with a 50-seat minimum when buying direct or through a reseller and no Huntress-required minimum through an MSP. The full math is in Huntress pricing 2026: direct vs managed.

So the realistic comparison is not $3 against $8.99. It is: you are already paying the $3 inside your $22. The question is what the additional layer costs and whether the work it removes is work you were actually going to do.

When Defender for Business is enough

Stop here and keep your money if all three are true:

• You have a named IT administrator, internal or contracted, who will genuinely work the incident queue rather than intending to
• You are comfortably under 300 users and not about to cross it
• Nobody — insurer, enterprise client, regulator — is asking you to evidence 24/7 monitoring or documented response

Under those conditions Business Premium is a strong security posture at a fair price, and paying us on top of it would be buying a service you will not use.

When it is not enough

• The administrator is you, and you have another job. The queue does not care. This is the single most common failure we see, and it is not a competence problem.
• You assumed "Microsoft handles it." They do not, and at your licence tier they will not sell you the option.
• A carrier questionnaire is coming. Cyber applications ask about EDR deployment, 24/7 monitoring and documented incident response as separate questions. Defender answers the first one well and the other two not at all. These forms are warranties, so a generous answer is not a harmless one — see cyber insurance readiness.
• Nights and weekends matter to you. Ransomware operators know when your admin sleeps.

The ten-minute version

Open your Microsoft 365 Defender portal right now and look at the incident queue.

If it is empty and you know why it is empty, you are fine. If it has items in it that nobody has read, you have just answered the question — and no additional product will fix it, only an additional person.

Our own managed detection and response sits on top of Microsoft-centred stacks rather than replacing them, and Ridge Watch pricing is public. If you would rather have the short conversation, book a briefing and we will tell you honestly if your existing licence is already the right answer.