Key Metrics (Lean and Lean Six Sigma)

Metric	Definition	Focus
Cycle Time	The actual time it takes to complete one unit or one process step, from start to finish.	Measures the efficiency of the production process itself. Time between start to finish.
Lead Time	The total time a customer waits from placing an order to receiving the finished product or service.	Measures the customer's experience from a timing perspective; it includes processing and waiting/queue time. From Customer to Deliver to Customer
Takt Time	The rate of production required to meet customer demand (Available Production Time $\div$ Customer Demand).	Sets the necessary rhythm or pace for the process to match demand and avoid over- or under-production. 8 working hours = Every hour 1 product
Unit Time	Often used synonymously with Cycle Time or Processing Time (the time a unit is actively being worked on).	A simple measure of the time spent working on a single unit.

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