JIT purchasing has many benefits but also some risks. do you agree? Just-in-time (JIT) purchasing, which is also called lean purchasing, is a "demand-pull" purchasing system that purchases each component in a production line as soon as, and only when, needed by the next step in the production line. benefits include lower inventory holding and less storage space needed. risks could include any failure on the part of suppliers which could result in the company's assembly plant not meeting its scheduled deliveries