A practical order of operations for moving workloads to Microsoft 365 and Azure: inventory, identity, networking, data residency, and rollback — without the weekend surprise.
Cloud migration is not a single weekend cutover. It is a sequence of decisions about identity, data residency, dependencies, and rollback. This checklist reflects what Amen Security uses with Canadian clients moving to Microsoft 365 and Azure in 2026.
Most failed migrations trace back to identity — not storage. Before moving mailboxes:
Identity work starts before any mailbox moves: clean up your Microsoft 365 licences and security settings first — dead accounts, duplicate licences and half-finished security defaults are cheaper to fix in the tenant you already have.
Canadian clients often require clarity on where data lives. Confirm Microsoft 365 tenant region, Azure resource groups, and backup copy locations. Document subprocessors for privacy questionnaires.
Define rollback triggers: authentication failure rate, critical app incompatibility, data loss beyond RPO. Run a tabletop with executives and IT — who decides to roll back, and within what window?
Rollback planning assumes the backup is safe to trust — but after the October 2026 ConnectWise incident, your Microsoft 365 backup can be attacked too, through the connected app's own permissions, so audit that access before you rely on the restore.
Need a migration partner? Amen Security runs assessments that output a prioritized wave plan with effort, risk, and Canadian compliance notes.
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