An add-on that layers E5-level threat protection onto Business Premium. Adds Entra ID P2 (identity protection and governance), Defender for Identity, Defender for Endpoint Plan 2 (full EDR, threat hunting), Defender for Office 365 Plan 2 (automated investigation and attack simulation), and Defender for Cloud Apps — giving SMBs enterprise-grade security across identities, devices, email, and cloud apps at a fraction of the enterprise cost.