In Lean methodology, what is the purpose of mapping flow?

• A. To identify the root cause of defects after they occur.
• B. To accelerate the worst-performing processes.
• C. To identify value-added steps and waste in the process and guide improvements.
• D. To assign blame to departments.

Answer: (C)

In Lean, mapping flow visualizes how work moves through a process from start to finish, including both material and information, so you can see which steps add value and which are waste. This clarity helps you target improvements where they’ll reduce lead time and eliminate non-value-added activities, shaping a smoother, faster flow for the customer. The purpose is proactive: to understand the whole process, identify bottlenecks and delays, and guide changes that improve overall performance. It isn’t about blaming people or just speeding up one part in isolation, but about designing a better end-to-end system. That’s why identifying value-added steps and waste and guiding improvements is the correct framing of the purpose.