In the event of a planned software upgrade impacting the critical infrastructure of a financial institution's transaction system, which of these actions is MOST crucial to ensure the upgrade can be rolled back without affecting the normal operational capability and security of the system?
Establish a detailed backout plan in case the upgrade fails.
Update all operational documentation prior to the upgrade.
Maintain strict version control during the upgrade process.
Ensure effective communication with stakeholders about the upgrade.
Developing a backout plan is indispensable in change management, especially for crucial systems within a financial institution. A backout plan ensures that in the event the upgrade introduces new vulnerabilities or disrupts services, the system can be returned to its pre-upgrade state, thereby maintaining operational capability and security. While engaging stakeholders, implementing version control, and updating documentation are all essential components of change management, none of these steps address the immediate preservation of system operational integrity and security in the case of an unsuccessful upgrade as directly and effectively as a well-structured backout plan does.
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