Kanban is a process that was developed by Toyota in the 1940s to improve the efficiency of their production process. It is a system that uses visual cues to manage the flow of work and ensure that tasks are completed in an efficient and timely manner. The official business definition of Kanban is a visual system for managing workflows and tasks. It uses cards, boards, and columns to represent the various stages of a task. The cards represent tasks that need to be completed, and the columns represent the different stages of the task. The boards provide a visual representation of the progress of each task, and the cards are moved from one column to the next as the task progresses. Kanban is an effective way to manage tasks and ensure that work is completed in an efficient and timely manner.