MFA is one of the fastest ways to reduce account takeover risk, but rushed rollouts can lock people out and disrupt operations.
Phase 1: Prioritize critical accounts
Start with admin accounts, email tenants, domain/DNS controls, remote access, and finance tools. These systems create the highest business impact if compromised.
Phase 2: Standardize authentication methods
Prefer app-based authenticators or hardware keys over SMS when possible. Define a backup method and break-glass process for critical admins.
Phase 3: Pilot with a small group
Run a short pilot with users from operations, finance, and leadership. Fix enrollment friction before broad enforcement.
Phase 4: Enforce by policy, not by exception
Use conditional access policies and role-based requirements. Avoid permanent bypasses; use time-limited exceptions with approval and logging.
Phase 5: Test recovery flows
Verify account recovery, lost-device handling, and admin lockout response. Recovery planning is part of security planning.
Phase 6: Audit quarterly
Review enrollment, stale accounts, and excluded groups each quarter. MFA posture drifts as teams and tools change.