Inventory management

Inventory management is a cornerstone of manufacturing and retail operations, ensuring organizations have the right goods in the right quantities at the right moment. It balances two forces. Holding too little inventory can cause costly stockouts and lost sales, while excessive inventory ties up cash, raises storage costs and risks obsolescence. The constant challenge is to optimize inventory to support service goals and minimize costs, impacting liquidity, profitability, and competitiveness throughout the supply chain. Inventory is not monolithic. It takes several forms, raw materials, awaiting production, work in progress moving through manufacturing, and finished goods ready for sale. Firms may also hold safety stock to absorb demand fluctuations or supply delays. Inventory management costs go beyond the purchase price, including storage, insurance, opportunity cost, and risks like obsolescence or shrinkage. A thorough understanding of these factors is essential for choosing effective management policies and metrics such as inventory turnover and fill rates. To address the balance between holding too much or too little inventory, firms use control models like economic order quantity, EOQ, which identifies the order size that minimizes total ordering and holding costs. EOQ assumes predictable demand, fixed ordering costs, and steady lead times. But real world factors, such as fluctuating demand, unreliable suppliers or perishable goods,