Cover-time planning (CTP) is a "pull" system, but with the intent of planning and not merely waiting for the execution time to act.
low level assembly planning
inventory, while in a flow/lean/ just in time (JIT) environment, orders are conversely pulled through the process, based on actual demand. Part two of the Demand-driven versus Traditional Manufacturing Requirements Planning series. In contrast, rather than emphasize planning such as ERP, lean manufacturing and JIT concepts, emphasize the continuous improvement of processes. For example, it emphasizes processes that lead to reduced inventory throughout the supply chain, shorter lead times, and faster