In depth

In Depth

Pricing

Bitdefender’s per-device model works well for small deployments but scales linearly. Microsoft’s per-user approach is attractive for M365 subscribers—EDR comes standard, not as an upsell—though you’ll pay more if you’re outside the Microsoft ecosystem. Edge: Microsoft for existing M365 shops; Bitdefender for device-focused pricing flexibility.

Features & Deployment

Bitdefender GravityZone deploys via cloud + on-premises and emphasizes:

• Industry-leading AV engine with exceptional independent test scores
• Modular approach: patch management and full-disk encryption as add-ons
• MSP-friendly monthly billing for managed service providers
• Risk analytics for visibility across your fleet

Microsoft Defender for Business is cloud-only and bundles:

• EDR and next-generation AV in one package (no upsell required)
• Threat & vulnerability management with auto-investigation
• Deep M365 integration—calendars, email, identity risk flow into threat context
• Per-user licensing covers multiple devices

Edge: Bitdefender for modularity and AV pedigree; Microsoft for integrated EDR and M365 synergy.

Ratings & Verdict

Bitdefender edges ahead in community sentiment and our assessment, reflecting its market-proven AV heritage and lean pricing for pure protection. Microsoft’s lower score reflects friction with licensing complexity and a steeper learning curve outside M365-native environments—but it’s a solid, increasingly mature choice if you’re already invested in Microsoft 365.

Choose Bitdefender GravityZone if: You want best-in-class antivirus, value per-device transparency, or rely on an MSP.
Choose Microsoft Defender for Business if: You run M365, want EDR without a separate bill, and prefer cloud-native simplicity over on-premises flexibility.