A Kanban board is a visual project management tool that organizes tasks into columns representing workflow stages such as To Do, In Progress, and Done. Cards representing tasks are moved between columns as work advances.

Real-time Kanban boards use peer-to-peer or server-based synchronization protocols so that changes made by one user are instantly visible to all other connected users without requiring a page refresh.

Kanban is a continuous flow system with no fixed iterations, while Scrum organizes work into time-boxed sprints with defined ceremonies. Kanban limits work in progress while Scrum uses velocity and sprint capacity planning.