What is kanban column?
Quick definition
A vertical section on a kanban board representing a stage in a workflow, such as 'To Do', 'In Progress', or 'Done', that holds tasks progressing through that stage.
A kanban column is a fundamental organizational unit in kanban methodology that visually represents a specific phase or state of work within a process. Each column contains cards that represent individual tasks or work items currently in that stage. The typical flow moves from left to right, with columns like 'Backlog', 'To Do', 'In Progress', 'Review', and 'Done' representing the journey of work through your system.
Kanban columns enable teams to visualize workflow bottlenecks, manage work-in-progress limits, and maintain continuous flow. By organizing work into discrete columns, teams can immediately identify which stages are overloaded and where focus is needed. Columns can be customized to match your specific process, and each column may have associated WIP (work-in-progress) limits that prevent too many tasks from accumulating in any single stage.
In the context of AI-driven workflows and agentic systems, kanban columns help organize autonomous agent tasks and coding work. Agents can automatically move tasks between columns based on completion criteria, while humans retain oversight through the visual board representation. This integration of kanban principles with AI automation creates a transparent, manageable system for complex multi-step operations.
Example
How it shows up in practice
A software development kanban board might have columns: Backlog → To Do → In Progress → Code Review → Testing → Done, allowing developers to drag cards rightward as work advances.
In Kanboard
In Kanboard, columns are the core organizational structure of task boards. Users create columns to represent workflow stages, configure WIP limits per column, and customize column behavior. Kanboard allows reordering columns, setting rules for task transitions, and automating column movements through project settings and swimlanes.
Frequently asked questions
What is the difference between a kanban column and a swimlane?
Columns represent workflow stages (vertical), while swimlanes represent categories or team members (horizontal). Both can exist together on the same board for two-dimensional organization.
Can I set limits on how many tasks go in a column?
Yes, Work-In-Progress (WIP) limits restrict the maximum number of cards allowed in a column. When reached, the team must complete or move existing work before adding new tasks.
How do AI agents interact with kanban columns?
Agents can programmatically move tasks between columns based on completion criteria, query column status via APIs, and trigger workflows when cards enter specific columns.
What happens when a column is full?
With WIP limits enforced, new cards cannot enter a full column. This signals a bottleneck and encourages the team to focus on clearing that stage before pulling more work.