JIT (Just-in-time) is the method of logistics management (it may be rather a philosophy of the production), which organizes the logistics flows to minimize transport and storage costs.
The principle of JIT is to provide each material subcontracts for the production to be available at the exact moment when they are to be used in the production process. It is minimized the material movement in the enterprise and production lines are organized to reduce as much the storage and transport costs.
The author of the JIT concept is the Japanese automaker Toyota, therefore, it is also used the alternative name Toyota Production System. Principles of JIT were laid in 1926, but the greatest expansion occurred in the 80’s of 20th century in Japan and the USA.