What is the primary aim of Just-In-Time manufacturing?

• A. Maintain large safety stock to avoid shortages.
• B. Minimize inventory by receiving inputs as they are needed.
• C. Centralize procurement to a single supplier.
• D. Maximize production speed at all costs.

Answer: (B)

Just-In-Time manufacturing is all about reducing waste by aligning production tightly with actual demand. The core idea is to pull materials through the system only as they’re needed, so inventory levels stay very low. When inputs arrive exactly when required and are used promptly, carrying costs drop, space is freed up, and problems in the process become visible sooner, allowing quick fixes and continuous improvement. This relies on reliable suppliers, stable processes, and smooth workflow (often organized with signals like kanban to trigger what’s next). It isn’t about stockpiling or pushing production faster at any cost, and it doesn’t depend on centralizing procurement. Those approaches would undermine the lean, responsive flow that JIT aims to achieve.