What is a kanban board?
A kanban board is a visual tool divided into columns representing workflow stages, with cards representing individual work items that move from left to right as work progresses. The board gives teams a shared, real-time view of everything in flight. At a glance, anyone can see what is being worked on, what is waiting for review, and what is done.
A typical software team's kanban board has five columns: Backlog, To Do, In Progress, Review, and Done. Each card on the board represents a task, bug, feature, or any discrete unit of work. The physical act of dragging a card from one column to the next is a deliberate declaration that the work has moved to a new stage. No status spreadsheets, no update emails, no guessing.
Why kanban boards matter
Kanban boards replace process memory with visual state. Instead of relying on people to remember where things stand, the board shows it. Instead of relying on managers to track who is overloaded, the board shows it. This transparency is what makes kanban boards the most widely adopted task management format in software teams.
Boards also create a natural framework for improving workflow. When cards pile up in a particular column, that column is a bottleneck. When a column is consistently empty, the upstream stage is either too slow or the downstream stage has excess capacity. These patterns are invisible in spreadsheets and ticket systems but immediately obvious on a board.
Anatomy of a board
Columns represent the stages work passes through. Cards sit within those columns and carry the details of each work item: title, description, assignees, labels, checklists, due dates, and attachments. Card order within a column communicates priority. The card at the top of To Do is the next one to pick up. Columns can have WIP limits that cap how many cards they can hold, which prevents the team from overloading any single stage.
Beyond the core structure, boards can include labels for categorizing cards by type or priority, swimlanes for grouping rows by team or workstream, and filters for focusing on specific subsets of work. The goal is to keep the board simple enough that the team actually uses it every day, while rich enough that it answers common questions without opening individual cards.
How Flux handles kanban boards
Flux is purpose-built around kanban boards. Every board supports fully customizable columns, drag-and-drop card movement, and real-time sync via server-sent events. Cards include labels, checklists with progress indicators, multiple assignees, due dates, comments, and file attachments. The kanban board feature page covers the full set of capabilities. For teams that manage work across multiple projects, Flux's multi-board view consolidates cards from every board into a single screen with cross-board filtering.