"A big board. (See big board.) Typically, columns indicate each task’s status. Columns might be labeled Backlog, Ready, Coding, Testing, Approval, and Done. In some variations, rows indicate the person assigned to each task." (Rod Stephens, "Beginning Software Engineering", 2015)
"A visualization tool that enables improvements to the flow of work by making bottlenecks and work quantities visible." (PMI, "Practice Standard for Scheduling" 3rd Ed., 2019)
"A workflow and work visualization chart describing activities flow within a project, originally created in the 1940s by Toyota." (Miguel A Garcia-Ruiz et al, "A User Study of Virtual Reality for Visualizing Digitized Canadian Cultural Objects", 2019)
