Major Incident Management centralizes command, control, communication and escalation requires for theses critical service availability, and service recovery in the event of an outage or service interruption. Major Incident Management exists to effectively identify, prioritize and restore a business’s mission and business critical services as soon as possible.
Closure on a Major Incident needs to take a post incident cross-functional review of the what happened during the incident to truly understand why it happened and what is the root cause and full scope of the major incident.
The purpose of the post-incident review is to assess all the steps of the Major Incident Management processes, the business, and people impacted by the incident to discover ways to ensure it does not happen again. Or at least take on corrections that ensure it is identified and mitigated early , so it never happens again.