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I think what you’re getting at is determining who the customer is of the process being analyzed and improved. If you’re trying to decrease the lead time to processing a mortgage application, then you’ve got an external customer. If you’re trying to decrease the time to hire, then you’ve got an internal customer. Once you…
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Elisabeth Swan

Elisabeth is a Master Black Belt at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 30 years, she's helped leading organizations like Amazon, Charles Schwab and Marriott International, Inc. build problem-solving muscles with Lean Six Sigma to achieve their goals.