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Just-in-Time (JIT): Reduce Inventory Without Running Out

Stock ties up cash, space and attention — and hides problems. Just-in-Time aims to receive and make things only when they're needed, in the quantity needed.

By DOOfy3 min read

What is Just-in-Time?

Just-in-Time (JIT), a pillar of the Toyota Production System, is a pull-based approach: production and purchasing are triggered by actual demand rather than forecasts and large batches. The result is lower inventory, less waste and faster flow.

How to move towards JIT

  • Stabilise demand data — know your real usage.
  • Reduce batch sizes and changeover times.
  • Use pull signals (Kanban cards, reorder points).
  • Build reliable supplier partnerships with frequent deliveries.
  • Keep small safety buffers for critical items while you learn.

Risks to manage

  • Supplier disruptions with no buffer.
  • Volatile demand without good forecasting.
  • Applying JIT to long-lead, critical items too aggressively.

How DOOfy helps

JIT only works with accurate, current demand and stock data. AIMOS One tracks actual usage and stock levels as they change, so reorder points can be based on real consumption instead of guesswork.

Frequently asked questions

What is the main goal of JIT?

To produce and receive only what is needed, when it is needed, minimising inventory and waste.

Is JIT risky?

It can be if suppliers are unreliable or demand is volatile. Most businesses keep small safety stocks for critical items.