The pull principle is a concept for material flow and process flow. A process step in a value chain should not take place until it is requested by the next step or a customer.
In production environments, therefore, a customer order triggers the production of a product. In the context of the construction industry, a trade triggers the required input. In this way, far fewer resources are committed and the process can be brought into a continuous flow.
In order to be able to implement the pull principle effectively, the production sequence should be smoothed (Heijunka). The individual process steps must be synchronized in such a way that the business sequence can be smooth.