Which metric best demonstrates the success of a system rollout?

• A. End users
• B. Expert analysis
• C. Technical staff
• D. Professional evaluators

Answer: (C)

Measuring a system rollout's success centers on how well the system operates in production, as observed by the technical staff responsible for supporting it. Technical staff are directly engaged with the system's day-to-day functioning, so they can assess uptime, response times, error rates, data integrity, and the ability to integrate with other systems. Their experience confirms whether deployment meets requirements, remains stable, and can be maintained over time, which is the strongest signal that the rollout has truly succeeded. End users provide valuable feedback on usability and adoption, but that doesn't necessarily prove technical stability. External analyses or evaluators offer perspectives, but the practical proof comes from the technical staff who keep the system running smoothly.