Columns represent the statuses that an issue can be in. On a simple board, as shown in the following screenshot, we have three columns, and they are each mapped to an issue status:

• To Do: Issues that are waiting in the queue to be worked on are mapped to the To Do workflow status
• In Progress: Issues that are currently being worked on are mapped to the In Progress workflow status
• Done: Issues that are completed are mapped to the Done workflow status:

This is a very simple setup where issues only have three steps from start to finish. Often, you will have an existing workflow that is more complex than this.