Companies use a Just-in-Time manufacturing and inventory management system to improve the efficiency of the company and reduce costs. The system requires manufacturers to purchase only when customer orders create a demand. Companies must develop a relationship with vendors to ensure parts reach the facility in time to manufacture products for the customer request. Businesses only produce inventory when there is a customer order in place. The system does not allow the business to produce or store excess inventory. Just-in-Time systems work in large and small organizations and those that produce products or services. With adjustments, the principles of Just-in-Time inventory management and manufacturing can work in any business.