Just in time is a business philosophy that became popular in Japan in the 1970s. It is a production strategy that aims to reduce inventory costs by producing or acquiring products just in time to fulfill customer orders. Some of the synonyms for "just in time" include lean production, JIT manufacturing, and pull production. These terms signify the same intention of streamlining production to reduce waste and increase efficiency. Other synonymous phrases include on-demand producing, just-in-sequence production, and Kanban system. These terms all describe a manufacturing approach that is driven by customer demand, allowing businesses to save money and resources while improving product quality and customer satisfaction.