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Introduction to !
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K!A N B A N
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with Paul Klipp
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What do we already know?"
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What do you we want to learn today?
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What is Kanban?"
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Principles"
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Start with what you do now!
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Respect the current process!
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Agree to pursue incremental, evolutionary !
change!
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Rules"
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Visualize workflow!
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Limit WIP!
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Manage flow!
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Make process policies explicit!
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Improve collaboratively using models and !
the scientific method!
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Implement feedback loops
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Types of Work"
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What can go on a task card?"
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Backlog Coding Testing Done
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features take two days; testing takes one day; average of two bugs per feature
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Little’s Law"
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Cycle Time = ! ___________!
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Bottlenecks"
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Every system has them!
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Stable system = stable bottlenecks!
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Look for: !broken WIP limits!
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Input Design Dev QA Done
Queue
Ready
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Five Focussing Steps"
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Identify!
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Exploit!
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Subordinate everything else!
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Elevate!
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Prevent inertia (is there a new bottleneck)!
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source: The Goal by Goldratt"
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Metrics"
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Lead Time!
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Cycle Time!
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Reading a Cumulative Flow Diagram (CFD)
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Waste"
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Muda!
wasted effort
Mura!
variability!
unevenness
Muri!
overburden
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Cost of Delay"
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Normal!
The sooner we do it, the sooner!
we benefit!
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Expedite!
This hurts every day that!
we don’t have it!
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Fixed Date!
It’s gonna hurt if we’re not ready!
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Intangible!
someday we’ll need this
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Quality Assurance Practices
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Code Quality Architecture
Is the solution the best? Are we following Is the structure stable, extensible, maintainable?
appropriate conventions?
Usability Requirements
Does it make sense? Is it a pleasure to use? Are we building the right thing?
Other
Ideally, practices should be explicit including who should do them and when.
Higher value QA practices catch issues more quickly. The best keep them from ever happening.