SentinelOne vs Microsoft Defender for Endpoint: EDR Comparison
Compare specialist EDR with native Microsoft endpoint security.
Native Security vs Specialist EDR
Many organisations running Microsoft 365 assume they already have endpoint protection covered through Microsoft Defender.
However, as security maturity increases, teams often evaluate specialist EDR platforms such as SentinelOne alongside Microsoft Defender for Endpoint.
Both provide modern endpoint detection and response. But they differ in:
- Architecture
- Licensing structure
- Automation capability
- Operational complexity
Vendor Overview
SentinelOne
SentinelOne offers:
- Behavioural AI-based detection
- Autonomous response
- Automated rollback from ransomware
- Storyline™ attack visualisation
Primary strength:
Endpoint autonomy and rapid remediation.
Microsoft Defender
Microsoft Defender provides:
- Behavioural threat detection
- Threat & vulnerability management
- Integration with Microsoft 365 ecosystem
- Deep integration with Azure AD
Primary strength:
Native integration across Microsoft environments.
Core Capability Comparison
| Capability | SentinelOne | Microsoft Defender |
|---|---|---|
| Behavioural AI Detection | Strong | Strong |
| Automated Rollback | Yes | Limited |
| Native M365 Integration | Limited | Deep |
| Vulnerability Management | Moderate | Strong |
| Threat Intelligence | Moderate | Strong (Microsoft global telemetry) |
| Licensing Simplicity | Standalone | Included in E5 / Add-on tiers |
| Autonomous Offline Protection | Yes | Limited |
Licensing & Cost Considerations
This is often the deciding factor.
Microsoft Defender
- Basic protection included in Business Premium
- Full EDR capability typically requires E5
- Add-on licensing may apply
Many organisations underestimate the upgrade cost from E3 to E5.
SentinelOne
- Licensed per endpoint
- Tiered feature sets
- No dependency on Microsoft licensing tier
Defender is most powerful when combined with:
Without E5, capability may be limited.
When to Choose SentinelOne
You prioritise rollback functionality
You want strong autonomous detection
You do not want to upgrade to Microsoft E5
You prefer vendor independence
When to Choose Microsoft Defender
You already run E5 licensing
You want tight integration with Microsoft ecosystem
Your security operations are built around Microsoft tools
You value vulnerability management integration
Frequently Asked Questions
Is SentinelOne better than Microsoft Defender?
Neither is universally better. It depends on licensing, ecosystem integration and automation requirements.
Does Defender include EDR?
Yes, but full capability typically requires E5 licensing.
Does SentinelOne provide rollback?
Yes, rollback is a core differentiator.
Is Defender sufficient for SMEs?
It may be, particularly if Business Premium or E5 licensing is already in place.