Microsoft Defender for Office 365 Pricing in 2026
3 plans, paid from $3.
Microsoft Defender for Business
$3/mo
Billed Paid yearly; annual subscription auto-renews.
Up to 300 users · Up to five devices per user · No minimum device requirement
Microsoft Entra Internet Access
$5/mo
Billed Annual subscription—auto renews
Secure employee access to internet, AI, and SaaS apps · Protect against internet threats
Microsoft Entra Suite
$12/mo
Billed Annual subscription—auto renews
Includes Secure Web and AI Gateway capabilities · Continuous, adaptive Conditional Access · Identity governance and real-time risk detection
Read from Microsoft Defender for Office 365's pricing page on 20 Sept 2026.
What the alternatives cost
| Product | Free | Paid from |
|---|---|---|
| Oligo Security | Free plan | — |
| Sysdig Secure | — | $20 |
| Amazon GuardDuty | Free trial | $0.03 |
| ARMO Platform | Free plan | — |
| SentinelOne Singularity Cloud Security | — | — |
| Tenable One Cloud Security | — | — |