This guide gives you an interactive decision tool, a recommended ten-policy baseline, a naming convention, a phased rollout sequence, and the field-tested advice I use in real Conditional Access deployments. Select your scenario across six dimensions and get a specific policy recommendation with a suggested name, rollout plan, testing notes, and licensing requirements. No data is sent anywhere. Everything runs in the browser.

This scorecard is based on the type of checks I use when reviewing Microsoft 365 tenants in real environments. It is not a replacement for Microsoft Secure Score. Secure Score measures what can be detected automatically. This assessment looks at operational practices, design decisions, and governance gaps that often require human review. Score your tenant across four pillars and use the result to decide what to improve first.

A 50-person accounting firm and a 5,000-person manufacturer face the same threats but have wildly different resources. Copying an enterprise Zero Trust playbook into an SMB creates complexity that no small IT team can maintain — and the complexity itself becomes a risk. This final article covers: the phased SMB approach (identity first, devices second, data third), the enterprise framework with full staffing, the complexity threshold by org size with recommended CA policy counts and licensing, six things SMBs should never copy from enterprise (FIDO2 at scale, Sentinel without SOC, Workload Identity CA, advanced session proxy), Microsoft-managed CA policies, practical recommendations per org size from 50 to 2,000+ users, and a Zero Trust strategy checklist. Most SMB breaches do not happen because of missing features. They happen because of misconfigured or misunderstood ones.

Microsoft 365 Business Premium security checklist for SMBs. Learn how to harden identity, Conditional Access, email, endpoints, and monitoring with a practical baseline approach.