Microsoft Defender for Business

Endpoint antivirus, detection, and response — the small-business counterpart to Defender for Endpoint.

List price $3.00/user/mo U.S. list, annual commitment, as of October 2026

Constraints

≤300 seats. Sold standalone only to organizations with up to 300 users. Source

String ID MDE_SMB

GUID 5e1e7702-a2b7-4360-8d07-2f515792896f

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Included in

Derived from the service plans Microsoft provisions with each SKU — Microsoft publishes no product-in-bundle mapping.

Microsoft 365 Business Premium +3 variants

What's included

Curated capability groupings first, then every remaining service plan Microsoft provisions with this SKU — together they're the complete list, nothing is hidden.

Security
Defender for Business
Other service plans
MDE_SecurityManagement
Microsoft 365 Lighthouse (Plan 1)
Microsoft 365 Lighthouse (Plan 2)