Agile teams don't manage projects with a single up-front plan; they manage a continuous flow of work through visible stages — usually Backlog, In Progress, Review and Done. This board renders that flow in 3D: cards spawn in the Backlog, cross an invisible pipe toward Done, and pile up or stall exactly the way real tickets do when a team takes on too much at once.
Little's Law — a formula from queueing theory — states that average cycle time equals work-in-progress divided by throughput. It's why lowering a WIP limit, counter-intuitively, often makes a team feel faster: less work in flight means each ticket spends less time waiting its turn.
A 3D Kanban/Scrum board where task cards flow from Backlog through In Progress, Review and Done, so you can see work-in-progress limits, team throughput and sprint cadence shape the pace of delivery in real time.
Cards move through the board according to Little's Law: cycle time depends on how much work is in progress relative to throughput. A tight WIP limit blocks new work from starting (glowing red cards) but keeps the flow through Review and Done smooth.
Set team throughput and the WIP limit for In Progress, and pick a cadence — continuous Kanban flow or 1/2-week Scrum sprints (watch the blue sprint wall sweep across the board). Watch the live burndown trace and cycle-time stat respond.
Little's Law (L = λW) comes from queueing theory, not software — it was proven mathematically in 1961 and applies just as well to Kanban boards, supermarket checkout lines and hospital waiting rooms.