In depth

In Depth

Pricing

Verdict: Microsoft wins on per-seat cost, especially if you already own M365. SentinelOne’s pricing model requires jumping to the $179.99+ tier to access EDR—a significant step from Core.

Features & Deployment

Both deploy cloud-native, but serve different priorities:

SentinelOne Singularity

• Autonomous AI-driven detection with minimal tuning
• Storyline attack visualization (standout for incident response)
• Ranger network discovery and rollback remediation
• EDR/XDR core to higher tiers; Data Lake adds cost
• Best-in-class for threat hunting and lateral movement detection

Microsoft Defender for Business

• Streamlined EDR built for SMBs, not enterprises
• Threat & vulnerability management included
• Auto-investigation and response
• Native M365 and Windows integration (Defender ecosystem synergy)
• Requires tuning; less autonomous than SentinelOne

Deployment: Both cloud-only, minimal on-prem footprint. Microsoft integrates tightly with Entra ID and Intune; SentinelOne works across hybrid environments with less ecosystem lock-in.

Ratings

SentinelOne edges ahead on both independent and our assessments, reflecting superior autonomous detection and evasion resistance. Microsoft’s lower review count reflects its SMB-focused positioning.

Verdict

Choose SentinelOne Singularity if:

• You need industry-leading autonomous detection and rollback
• Your team handles threat hunting and complex incident response
• You want platform independence (works across multi-vendor environments)
• Budget allows $180–$230/endpoint/year

Choose Microsoft Defender for Business if:

• You’re already committed to M365 (feature overlap justifies $3/user/mo)
• You’re an SMB without dedicated security staff (lighter tuning burden)
• You value Intune and Entra ID integration
• You need basic EDR without enterprise frills

Bottom line: SentinelOne is the superior detection engine with autonomous smarts; Microsoft is the efficient bundled option for SMBs already in the Microsoft ecosystem. Don’t buy SentinelOne Core expecting EDR—commit to Complete at minimum.