Kanban is a technique that was developed by the engineers at Toyota with an important aim: to increase the efficiency of the manufacturing process. Since then, it has become widely used not only in the automotive but also other industrial sectors. As one of the key methods of lean manufacturing, the kanban system enables efficient production scheduling and material movement based on customer requests. Kanban cards are used to indicate when more goods are needed. In other words, you only produce when it is required and thus avoid unnecessary inventory.