Which statement describes a cost-related advantage of the big bang method?

Which statement describes a cost-related advantage of the big bang method?

• A. it can be cheaper to implement than other methods
• B. the new system is available immediately
• C. the new system may not work at its best until staff have become used to using it
• D. the outputs from old and new system can be compared

Answer: (A)

The big bang approach replaces the old system with the new one in a single, all-at-once switch. Its cost-related advantage comes from not having to run two systems in parallel during the transition. That means you avoid the ongoing, duplicate costs of maintaining and integrating both systems, along with duplicated data conversion and extended project management overhead. You incur the cost of the new system once, which can make the overall implementation cheaper than methods that roll the change out in stages. The other statements describe speed, user adjustment, or validation—factors that relate to time-to-benefit or quality, not the cost advantage.

The big bang approach replaces the old system with the new one in a single, all-at-once switch. Its cost-related advantage comes from not having to run two systems in parallel during the transition. That means you avoid the ongoing, duplicate costs of maintaining and integrating both systems, along with duplicated data conversion and extended project management overhead. You incur the cost of the new system once, which can make the overall implementation cheaper than methods that roll the change out in stages. The other statements describe speed, user adjustment, or validation—factors that relate to time-to-benefit or quality, not the cost advantage.