An organization is replacing a mission-critical system.
Which of the following is the BEST implementation strategy to mitigate and reduce the risk of system failure?
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A. B. C. D.C.
When an organization replaces a mission-critical system, it is essential to implement a strategy that minimizes the risk of system failure. The four possible implementation strategies to mitigate and reduce the risk of system failure are:
A. Stage: In the staged approach, the new system is implemented in stages, with each stage being thoroughly tested before the next stage is started. This approach provides a gradual transition from the old system to the new system, reducing the impact of any issues that may arise during the implementation process. It is a good approach when a phased approach will not disrupt the ongoing operations of the organization.
B. Phase: In the phased approach, the new system is implemented in a series of phases, with each phase being fully implemented before moving on to the next phase. This approach allows the organization to test each phase thoroughly before proceeding to the next phase, reducing the risk of system failure. It is a good approach when a phased approach will not disrupt the ongoing operations of the organization.
C. Parallel: In the parallel approach, the new system is implemented alongside the old system for a certain period, during which the two systems run in parallel. This approach allows the organization to compare the results of the new system with the old system, making it easier to identify and fix any issues that may arise during the implementation process. It is a good approach when the organization needs to have a backup system in case of failure.
D. Big-bang: In the big-bang approach, the new system is implemented all at once, with the old system being completely replaced by the new system. This approach is risky because any issues that arise during the implementation process can have a significant impact on the organization. It is a good approach when there is no tolerance for downtime or when the organization needs to quickly replace the old system.
In general, the BEST implementation strategy to mitigate and reduce the risk of system failure when replacing a mission-critical system is either the staged or phased approach. These approaches allow for a gradual transition to the new system, reducing the risk of system failure. The parallel approach may also be a good option if the organization needs to have a backup system in case of failure. The big-bang approach is the riskiest option and should only be considered if there is no tolerance for downtime or if the organization needs to quickly replace the old system.