When performing an analysis of an operation using mapping, it is useful to consider takt time.

Takt time is the fundamental concept to do with the regular, uniform rate of progression of products through all stages from raw material to customer. As such it is important in planning, in cell balancing, and in facility design.

It should also be a consideration along a complete supply chain. "Sell daily? make daily!" is the underlying idea. Takt time is the drumbeat cycle of the rate of flow of products. It is the "metronome" (from the German origins of the word). Understanding takt time is fundamental to analysis and mapping of Lean Operations.

Takt time is most simply the average rate at which customers buy products and hence the rate at which products should be manufactured. It is expressed in time units: one every so many minutes or so many minutes between completions.

Takt time should drive the whole thinking of the plant and the supply chain. In a plant it is the drumbeat.