Threat Prevention & Hardening: Implement Microsoft Defender for Endpoint, Defender for Office 365, Defender for Identity, Defender for Cloud Apps, and Defender for Cloud to protect endpoints, email, identities, SaaS apps, and multi-cloud workloads, including attack surface reduction, exploit and network protection, and phishing defenses. Security Operations: Deploy Microsoft Defender XDR and Microsoft Sentinel as a unified SIEM and XDR platform in the Microsoft Defender portal, including transitioning existing Sentinel environments from the Azure portal; build cross-domain detections, automated response, and threat hunting enriched by Microsoft Threat Intelligence; and use Microsoft Security Copilot agents to accelerate triage, investigation, and response.