Microsoft Defender XDR is a unified, pre- and post-breach enterprise defense suite that helps you protect, detect, investigate, and respond to threats across your entire environment.

Instead of managing separate tools in silos, Defender XDR brings together signals from multiple Microsoft security products, including:

• Microsoft Defender for Endpoint
• Microsoft Defender for Office 365
• Microsoft Defender for Identity
• Microsoft Defender for Cloud Apps
• Microsoft Defender Vulnerability Management
• Microsoft Defender for Cloud
• Microsoft Entra ID Protection
• Microsoft Data Loss Prevention
• App Governance
• Microsoft Purview Insider Risk Management
• Microsoft Security Exposure Management

By correlating these signals, Defender XDR helps your security team understand the full scope and impact of an attack: how it entered, what it touched, and how it is affecting your organization. It then coordinates prevention, investigation, and response across endpoints, identities, email, data, and applications to help you contain and remediate threats more efficiently.

Defender XDR is designed to help your team move from isolated alerts to a clear, end-to-end view of an attack.

Key ways it improves detection and response include:

• Combined incidents queue: Related alerts, impacted assets, and automated remediation actions are grouped into a single incident. This helps analysts focus on what is most important instead of chasing individual alerts.
• Cross-product single pane of glass: The Microsoft Defender portal (security.microsoft.com) provides one central view for detections, impacted devices and users, automated actions, and supporting evidence.
• Automatic attack disruption: Defender XDR correlates high-confidence signals from multiple workloads and can automatically apply containment actions to stop in-progress attacks and limit lateral movement. For example, if a malicious file is detected on an endpoint, Defender for Office 365 can be instructed to scan and remove that file from all email messages, and the file is then blocked on sight across the Microsoft 365 security suite.
• Self-healing capabilities: Using AI-powered playbooks and built-in remediation from the underlying products, Defender XDR can automatically help return compromised devices, user identities, and mailboxes to a secure state.

Together, these capabilities help your team reimagine incident handling—from manual, alert-by-alert work to coordinated, automated response across your environment.

Defender XDR gives your security team both high-level incident views and detailed raw data for deeper analysis.

Key capabilities include:

• Cross-product threat hunting: Analysts can create custom queries over raw data collected from multiple protection products. Defender XDR provides query-based access to 30 days of historic raw signals and alert data from:
  • Defender for Endpoint
  • Defender for Office 365
  • Defender for Identity
  • Defender for Cloud Apps
• Context-rich incidents: Incidents combine alerts, suspicious events, and impacted assets into a single narrative, helping analysts quickly see how an attack unfolded.
• Integrated vulnerability and exposure data: With Defender Vulnerability Management and Microsoft Security Exposure Management, your team gets continuous asset visibility, risk-based assessments, and built-in remediation tools to prioritize and address critical vulnerabilities and misconfigurations.

To use these capabilities, your organization must meet the Microsoft Defender XDR licensing requirements and enable the service in the Microsoft Defender portal. Once enabled, your team can use Defender XDR to rethink how they investigate threats—moving from isolated data sources to a connected, organization-wide view.