JUST-IN-TIME-DETAIL

Pull production triggered by downstream demand.

Definition

JIT relies on Kanban (pull signals), Heijunka (levelling), single-piece flow, demand-aligned takt time. Allows 50-70% inventory reduction but exposes to supply chain shocks (2020 pandemic case). Post-COVID evolutions: JIT+1 (moderate inventory buffer).

Origin

Toyota system theorised by Taiichi Ohno in the 1950s-60s.

Example in context

Toyota Georgetown receives Magna seats JIT 2h before line-side assembly.

Related terms

• Lean Supply — overarching philosophy.