Kanban

is a lean method(It's a method of manufacturing goods aimed primarily at reducing times within the production system, as well as from suppliers and customers) to manage and improve work across human systems. This approach aims to manage work by balancing demands with available capacity, and by improving the handling of system-level bottlenecks.

Kanban Board

Requires the following minimum elements:

• A definition of the individual units of value that are moving through the workflow. These units of value are referred to as work items.
• A definition for when work items are started and finished within the workflow, you may have more than one started or finished points depending on the work item.
• One or more defined states that the work items flow through from started to finished. Any work items between a started point and a finished point are considered work in progress.
• Explicit policies about how work items can flow through each state from started to finished.
• A service level expectation, which is a forecast of how long it should take a work item to flow from started to finished.

Common Kanban Practices

are described in the Kanban Guide as

• Defining and visualizing a workflow
• Actively managing items in a workflow
• Improving a workflow

Sources

Kanban(Wikipedia)