The official business definition of a Cumulative Flow Diagram (CFD) Kanban is a tool used to visualize the flow of work through a process. It provides a real-time snapshot of the status of work in progress, allowing for an understanding of the backlog, the current rate of work, and potential bottlenecks. The diagram is typically composed of several horizontal bands, each representing a process step. Each band is composed of individual blocks, with the number of blocks in each band representing the amount of work that has been completed or is in progress. As work is completed, the number of blocks in each band decreases, which allows the user to track the progress of each process step over time. By looking at the CFD, the user can quickly identify areas of improvement, as well as opportunities to optimize the workflow. Ultimately, the CFD helps identify and reduce bottlen