Guidance for Microsoft Defender for Business (MDB) — the SMB-segment endpoint security product (≤300 employees), bundled with Microsoft 365 Business Premium and available as a standalone SKU. Covers what's included vs MDE Plan 1/2 (next-gen AV, EDR with simplified configuration, ASR, automated investigation and response, vulnerability management, web content filtering, attack surface reduction, mobile threat defense add-on), wizard-driven onboarding, server add-on for SMB servers, the simplified portal experience vs full Defender XDR, transition path to MDE P2 / E5 as the org grows, and integration with Microsoft 365 Lighthouse for MSP delivery. WHEN: Defender for Business, MDB, SMB endpoint security, M365 Business Premium security, MDB server add-on, simplified EDR small business, MSP Defender for Business, M365 Lighthouse Defender, SMB upgrade to MDE Plan 2. DO NOT USE for enterprise EDR (use defender-for-endpoint), Defender XDR cross-product investigation (use defender-xdr), or Defender for Servers / Cloud (use defender-for-servers).
How to install defender-for-business?
vinayaklatthe/microsoft-security-skills/defender-for-business
$npx -y skills add vinayaklatthe/microsoft-security-skills --skill defender-for-businessInstalls into the current project.
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Run `npx skills use "https://github.com/vinayaklatthe/microsoft-security-skills" --skill "vinayaklatthe/microsoft-security-skills/defender-for-business"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/vinayaklatthe/microsoft-security-skills" that are relevant to the current task. Run `npx skills add "https://github.com/vinayaklatthe/microsoft-security-skills"` and select the relevant skills, then follow their instructions.
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