Certified Information Systems Auditor (CISA) — Question 1282

An organization is implementing a new system that supports a month-end business process. Which of the following implementation strategies would be MOST efficient to decrease business downtime?

Answer options

• A. Cutover
• B. Phased
• C. Pilot
• D. Parallel

Correct answer: D

Explanation

The Parallel implementation strategy allows the new system to run alongside the old system, ensuring that any issues can be addressed without halting business operations. Cutover, Phased, and Pilot strategies may involve more significant downtime or risks as they either switch systems entirely or implement them in stages, which can disrupt business continuity.