Building a cloud fallback for Microsoft 365

Short answer: a fallback needs four things prepared in advance — standby mailboxes with rehearsed DNS failover, an independent messaging channel, read-only access to critical files, and break-glass identity.

Placeholder article — final copy to be supplied.

Why backups alone are not enough

Backups protect data. A fallback protects work. You need both.

The four components

• Mail continuity: standby mailboxes and an MX failover runbook.
• Messaging: a channel that does not depend on Teams.
• Files: a synchronized read-only copy of the libraries that matter.
• Identity: tested emergency accounts excluded from fragile dependencies.

Rehearse it

A fallback that has never been tested is a plan, not a capability. Rehearse twice a year.