During a major incident, the immediate operational objective is to restore normal service as quickly as practicable and minimise adverse business impact. For that reason, prioritising rapid service restoration over detailed root-cause analysis is the best answer.
A permanent technical correction is not always required before service can be restored. A workaround, failover, rollback, component replacement, or temporary configuration may restore business capability while the underlying cause remains under investigation. Detailed root-cause investigation belongs primarily to subsequent Problem Management activity.
Option A would unnecessarily prolong business disruption. Option B fails to perform the essential investigation, coordination, communication, escalation, and restoration activities required during an incident. Option C is also wrong because escalation should follow defined impact, urgency, major-incident criteria, and organisational procedures rather than automatically escalating every incident. SDA v9 includes Incident Management and Problem Management among the IT Service Management practices analysts must understand. The key distinction is restoration versus diagnosis: Major Incident Management concentrates first on restoring service; Problem Management can subsequently investigate underlying causes.
[Reference: SDA v9 – IT Service Management; Incident Management; Major Incident Handling; Problem Management., ]
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