Define just in time

Just in time can mean arriving or happening only shortly before something is needed. In operations, just-in-time describes an approach that coordinates supplies or production closely with demand, aiming to limit unnecessary inventory. These uses are related but not identical.

Meaning and context

The everyday expression concerns timing. The operational term concerns a system of planning, supply, and flow. A company cannot implement a dependable system merely by ordering everything at the last possible moment. Reliability and coordination are important to the approach.

Examples and usage

We arrived just in time for the train describes a narrow timing margin. A manufacturer receiving components in coordination with a production schedule illustrates the operational concept. Actual arrangements can include buffers and other safeguards.

What to check

Do not assume that lower inventory automatically means lower overall risk or cost. Disruptions, variability, transport, and supplier reliability affect the result. Explain the particular process and tradeoffs rather than presenting just-in-time as a universal solution.

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