Question asked during the August 30th, 2012 webinar titled "Improving Processes with Scrum and Kanban"
Danny, Justin is spot on - there is no maximum.
The largest board I have seen 20 columns and it was a real pain to read on even a 24" display. I have also seen 14 columns spread across 4 42" LCD TV's for a really large JIRA Wallboard and that worked really well.
Thanks,
Nicholas
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