Common inventory planning methods or inventory management techniques, as they are sometimes referred to, include Material Resource Planning or MRP, Just-in-Time or JIT, Economic order quantity or EOQ, Days sale of inventory or DSI, ABC analysis, and others. Which method or mix of methods to choose will depend on many variables such as whether a company is a make-to-stock (MTS) or a make-to-order (MTO) manufacturer, whether it utilizes discrete or process manufacturing, whether it needs to account for consignment goods, etc.