Tempo is the adjustable speed at which a process unfolds through an aligned and stable Takt.
Why this term exists
A process can slow down or speed up without losing its integral step. Tempo names this strategic layer of adaptation while Takt remains the stable tactical unit.
Definition in the system
The adjustable speed at which a process advances through an aligned and stable Takt.
Canonical boundary / operational note
When capacity or circumstances weaken, Tempo changes first; Takt changes only when the process structure itself is no longer sustainable. Strategy governs Tempo; tactics preserve Takt.