Defender for Endpoint vs SentinelOne

Defender for Endpoint vs SentinelOne Singularity is a comparison between Microsoft's E5-bundled EDR with its XDR correlation and a specialist whose pitch is autonomous, on-device response — including the one-click ransomware rollback that no other major vendor matches. Both score at the top of independent evaluations. SentinelOne wins on platform breadth (especially Linux and Kubernetes), agent autonomy when the cloud is unreachable, and MSP tooling; Defender wins on Microsoft 365 integration, identity-aware disruption, cost for E5 customers, and Intune-driven configuration.

The Defender family map is in which Microsoft Defender is which and the product in Defender for Endpoint explained. The CrowdStrike comparison covers the other major specialist.

Where each one comes from

SentinelOne launched in 2013 with a behavioural-AI agent that makes decisions locally — detect, kill, quarantine, remediate, and roll back — without waiting for a cloud verdict. The Singularity platform now spans endpoint, cloud workload (including Kubernetes), identity (from the Attivo acquisition), data lake/SIEM, and a managed service (Vigilance). It supports Windows, macOS, Linux (broadly), and Kubernetes, and has a deep multi-tenant console that made it a favourite of MSPs and MSSPs.

Microsoft Defender for Endpoint is the endpoint layer of Defender XDR: built into Windows, agents for macOS, Linux, iOS, and Android, attack surface reduction, vulnerability management, automated investigation and response, and correlation with email, identity, and cloud-app signals in one incident queue. Configuration flows through Intune; licensing rides on Microsoft 365 E5, E5 Security, standalone MDE plans, or Defender for Business for SMB.

Decision criteria

| Criterion | Defender for Endpoint | SentinelOne | | --- | --- | --- | | Detection/prevention quality | Top tier | Top tier | | Offline / autonomous response | Good; some actions need cloud | Strong; agent acts locally without cloud | | Ransomware rollback | No single-click file rollback; prevention + attack disruption + M365 versioning | One-click rollback on Windows (VSS-based) | | Linux and containers | Supported distros; Kubernetes via Defender for Cloud | Broad Linux, Kubernetes runtime protection | | XDR correlation | Native across email, identity, cloud apps, endpoint | Singularity XDR; integrations for M365 signals | | Identity threat detection | Defender for Identity, Entra ID Protection, native | Singularity Identity (ex-Attivo), separate module | | SIEM | Microsoft Sentinel (native) | Singularity Data Lake; Sentinel connector | | Multi-tenant / MSP | Lighthouse + GDAP; per-tenant portals | Mature multi-tenant console | | Configuration | Intune; security settings management | Singularity console | | Managed service | Defender Experts for XDR / Hunting | Vigilance Respond / MDR | | Licensing | E5, E5 Security, MDE P1/P2, Defender for Business | Per-endpoint subscription, tiers (Core/Control/Complete/Commercial/Enterprise) |

Cost model

For a Microsoft 365 E5 customer MDE Plan 2 is already paid for; for E3 customers the E5 Security add-on (approximately 12 USD per user per month, as of 2026-09; check Microsoft) brings MDE P2 plus Defender for Office 365 P2, Identity, Cloud Apps, and Entra P2 — a lot of product for the money if you will use it. Defender for Business is in Business Premium and approximately 3 USD standalone.

SentinelOne is per-endpoint, quote-based, tiered, with the rollback and full EDR features in the Control/Complete tiers and above. Its cost is competitive with CrowdStrike; against "included in E5" it is an additional line item that needs a capability justification — rollback, Linux breadth, or MSP economics usually being it.

Choose Defender for Endpoint if

Microsoft 365 E5 (or E5 Security) is the licence and you want the XDR correlation and attack disruption that come with it.
Intune is the endpoint configuration tool and you want policies, antivirus configuration, and exclusions managed in one place.
Identity-aware response — disabling the compromised user, not just isolating the device — is the priority.
The SOC uses Sentinel and KQL.

Choose SentinelOne if

Ransomware rollback is a hard requirement (some cyber-insurance questionnaires and boards ask for it by name).
Significant Linux, container, or Kubernetes estate.
Endpoints are often offline or on constrained networks and must respond without a cloud round-trip.
You are an MSP/MSSP with many tenants, or you specifically want an EDR vendor independent of the OS vendor.

What people get wrong

Weighing rollback as the decisive feature without asking how often prevention would have stopped the encryption anyway — and whether OneDrive versioning and Microsoft 365 backup already cover the data that matters. Running both agents active "for defence in depth" (use passive mode for one of them). And judging Defender on 2018 Windows Defender memories: run the KQL hunting workshop against a trial tenant and judge what it does now.

Frequently asked questions

What is SentinelOne's rollback feature and does Defender have it?

SentinelOne's Windows agent uses Volume Shadow Copy snapshots to roll back files changed by a detected ransomware process, restoring them with one click. Defender for Endpoint does not have an equivalent single-click file rollback; its ransomware story is prevention (attack surface reduction, controlled folder access, tamper protection), automated investigation, attack disruption that isolates the identity and device, and recovery via OneDrive/SharePoint versioning and Microsoft 365 Backup.

Is SentinelOne better for MSPs than Defender?

SentinelOne built its multi-tenant console and MSP programme early and it remains a strength; many MSPs standardised on it. Microsoft has caught up for Microsoft 365 partners with Lighthouse and GDAP, and Defender for Business is priced for SMB, but managing many customers' Defender tenants is still more work than SentinelOne's single pane. For an MSP whose customers are all on Business Premium, Defender for Business is the economical default.

Can SentinelOne feed Microsoft Sentinel?

Yes — there is a Sentinel data connector for SentinelOne, and SentinelOne's own Singularity Data Lake (built on the Scalyr acquisition) can act as its SIEM. What you lose versus Defender for Endpoint is the native correlation in Defender XDR, where endpoint alerts join email, identity, and cloud-app signals into a single incident without a connector.