Microsoft Defender for Endpoint
Enterprise EDR/XDR with Copilot for Security — native M365 integration, Defender XDR portal, free in M365 E5
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About Microsoft Defender for Endpoint
Having deployed Microsoft Defender for Endpoint across enterprise Windows and Mac fleets, its native OS kernel integration delivers industry-leading threat prevention without the performance drag of third-party agents. The unified Defender XDR portal correlates endpoint, identity, and email alerts effortlessly. Full enterprise investigation capabilities require Microsoft 365 E5 licensing, making it pricey if you are not already standardizing on Microsoft's cloud ecosystem. For organizations living in Azure and Microsoft 365, it provides unbeatable native security intelligence.
Microsoft Defender for Endpoint is the enterprise EDR and XDR component of Microsoft\u2019s Defender security suite \u2014 and by install base the most widely deployed endpoint security platform globally, a natural consequence of its native integration with Microsoft 365, Windows, Azure, and Intune. Originally launched as Windows Defender ATP in 2016, it covers Windows, macOS, Linux, Android, and iOS at Plan 2.
Defender for Endpoint is part of Microsoft Defender XDR \u2014 a unified XDR platform correlating signals across endpoint (MDE), email (Defender for Office 365), identity (Defender for Identity), cloud apps, and cloud workloads into a single incident console. Automated Investigation and Response (AIR) autonomously triages and remediates threats, while Copilot for Security provides natural-language incident summarization, script deobfuscation, and threat hunting at ~$4/SCU-hour. Microsoft Sentinel integrates as the SIEM layer with pre-correlated XDR incidents. Microsoft reports disrupting 35,000+ ransomware incidents monthly.
Defender for Endpoint is the compelling default for M365 E5 organizations \u2014 Plan 2 full EDR at zero incremental cost \u2014 and for enterprises prioritizing native Windows integration, unified M365 security operations, and Copilot for Security AI within the Microsoft ecosystem.
Key Features
- Defender XDR unified portal — correlates endpoint, email, identity, cloud apps, and cloud signals into single cross-domain incident view
- Automated Investigation and Response (AIR) — AI-driven autonomous triage, investigation, and remediation
- Copilot for Security — GenAI SOC assistant for incident summarization, script deobfuscation, and natural-language threat hunting
- Behavioral AI detection — ML models detect threats by behavior patterns not signatures
- Live Response — remote shell into compromised endpoints for forensic investigation and remediation
- Microsoft Sentinel integration — pre-correlated XDR alerts flow into Sentinel SIEM for unified security operations
- Threat and Vulnerability Management — continuous endpoint exposure with risk-based prioritization
- Attack Surface Reduction (ASR) rules — policy-based controls blocking common attack vectors
- Microsoft Intune integration — unified endpoint management and security policy enforcement
- Defender Experts — Microsoft-managed proactive threat hunting and incident notification service
Pros
- Zero incremental cost for M365 E5 subscribers — Plan 2 full EDR included, most cost-effective for Microsoft shops
- Native Windows/Azure/M365/Intune integration — unmatched ecosystem coherence for Microsoft enterprises
- Defender XDR unifies endpoint, email, identity, cloud apps, and cloud signals — broadest cross-domain correlation
- Copilot for Security GenAI SOC assistant — incident summarization, script deobfuscation, natural-language hunting
- 35,000+ ransomware incidents disrupted monthly — proven at unprecedented real-world scale
- FedRAMP High compliance — approved for US federal government deployments
- AIR autonomous triage reduces tier-1 SOC analyst workload significantly
Cons
- Full EDR requires Plan 2 or M365 E5 — Plan 1 is prevention-only with no investigation or threat hunting
- Copilot for Security consumption-based (~$4/SCU-hour) — costs scale unexpectedly for heavy SOC use
- Advanced hunting requires KQL expertise — steeper than Charlotte AI natural language
- MacOS and Linux support less mature than Windows in some edge cases
- Complex M365 E3/E5/standalone/bundle licensing creates confusion and duplicate spend risk
Pricing
Microsoft Defender for Endpoint has two standalone tiers and M365 bundle pricing:
Plan 1 (standalone): $3/user/month \u2014 next-gen antivirus, attack surface reduction, device control, web protection. Prevention-only. Included in M365 E3 ($36/user/month).
Plan 2 (standalone): $5.20/user/month \u2014 full EDR, behavioral AI, AIR, 6-month retention, Live Response, KQL threat hunting. Included at no cost in M365 E5 ($60/user/month) and E5 Security add-on ($12/user/month on E3).
M365 Business Premium ($22/user/month, up to 300 users) includes Defender for Business. Copilot for Security ~$4/SCU/hour billed separately.
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Connect with Microsoft Defender for Endpoint
Frequently Asked Questions
Plan 1 ($3/user/month) provides next-gen antivirus, attack surface reduction, device control, and web protection — prevention only, no EDR. Plan 2 ($5.20/user/month) adds full EDR, behavioral AI detection, AIR, 6-month evidence retention, Live Response, and advanced KQL threat hunting. Plan 2 is included in M365 E5 at no incremental cost.
Yes. Plan 1 is included in M365 E3; Plan 2 is included in M365 E5 and the E5 Security add-on at no incremental cost. Audit existing M365 licenses before purchasing standalone seats to avoid duplicate spend.
Copilot for Security is Microsoft’s GenAI SOC assistant integrating with Defender XDR. It summarizes incidents, deobfuscates scripts, enables natural-language threat hunting, and automates investigation steps at ~$4/SCU/hour consumption pricing.
Defender for Endpoint is the default for M365 E5 organizations — Plan 2 at zero incremental cost with native Windows integration and unified Defender XDR portal. CrowdStrike and SentinelOne are preferred for mixed platforms or organizations wanting more sophisticated standalone EDR without Microsoft ecosystem dependency.
Microsoft reports disrupting 35,000+ ransomware incidents monthly, with customers seeing a 300% reduction in odds of encrypted files. Defender for Endpoint is the most widely deployed enterprise EDR globally given M365’s market share.
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