If there is one Kanban idea that organisations love to talk about and hate to actually practice, it’s this one.

Pull-based WIP control. Everyone you meet who knows Kanban is also an expert in WIP.

The most common question delivery teams are typically asked is also the most damaging one:


“When will it be done?”


Not because the question is unreasonable, customers are absolutely entitled to ask, but because most organisations answer it in a way that guarantees disappointment. Dates get guessed, confidence gets projected, risks get accepted and uncertainty gets quietly ignored until it turns into high profile failure. Yes, an estimate is better than no estimate but estimates turn into commitments and that only leads to problems.

If you only tracked one metric for your flow of work, this would be it.

Not cycle time.
Not throughput.
Not a beautifully colour-coded cumulative flow diagram.

Work Item Age.