As Stephen has been instructed to update all three routers' firmware for his organization, the change management system is where he should document his work.
The system involves a process that is responsible for managing all changes to the production operations environment from inception to completion.
The system of change management plays a major role in transforming a client business into a data-driven, intelligent enterprise in data culture and literacy.
Therefore, the change management system is where Stephen should document his work.
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