Business continuity
Business continuity is the ability to sustain critical business activities during and after a disruption, using planned arrangements that fit the organization's needs.
Start with the work people must keep doing, rather than a list of servers. Payroll, customer support, and order fulfillment may tolerate different interruptions and need different fallback arrangements.
Continuity can involve alternate work locations, other processing arrangements, or temporary manual procedures. Restoring technology is part of the problem, but so are the people who can authorize decisions and the information they need to work safely.
Keep the fallback usable
A procedure that depends on the unavailable service is not much of a fallback. Ask how staff will find instructions, contact an approver, and record decisions if their usual accounts or collaboration tools cannot be used. Agree on what can wait and what must continue with additional checks.
The account-recovery tabletop is a focused example of testing cross-team decisions when verification becomes difficult. It is not a complete business continuity exercise, but its discussion of unavailable verification routes can help expose a dependency.
Disaster recovery concentrates on restoring systems and services. Backup protection addresses one narrower safeguard for that work. A protected copy is useful; continuity planning still has to explain how critical operations continue while recovery is underway.