I went to the lean software and systems conference

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These are the slides from an internal Guidewire Software presentation that I gave, summarizing some of the bigger ideas generated from the Lean Software and Systems Conference that took place in Atlanta on April 21-23, 2010.

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I went to the lean software and systems conference

  1. 1. I Went to the Lean Software and Systems Conference in Atlanta and All I Got Was a Bunch of Thought-Provoking Ideas * Ted M. Young Development Manager, BillingCenter [email_address] Guidewire Software ( http://www.guidewire.com ) *And a cool t-shirt
  2. 2. Twitter Activity at LSSC <ul><li>374 Tweets </li></ul>
  3. 3. A Lean Background <ul><li>System Thinking </li></ul><ul><li>Inventory = Risk </li></ul><ul><ul><li>Just-in-Time </li></ul></ul><ul><ul><li>Delays Cause Waste (Batching) </li></ul></ul>
  4. 4. Some Terms <ul><li>MMF/MVF </li></ul><ul><ul><li>Minimal Marketable Feature </li></ul></ul><ul><ul><li>Minimal Viable Feature </li></ul></ul><ul><li>WIP </li></ul><ul><ul><li>Work-in-progress </li></ul></ul><ul><li>Kanban 看板 </li></ul><ul><ul><li>Sign board </li></ul></ul>
  5. 5. Lean Focus <ul><li>Value > Flow > Waste </li></ul>
  6. 6. Four Big Ideas <ul><li>Small Slices are Best </li></ul><ul><li>Make Work Visible </li></ul><ul><li>WIP Limits and Flow </li></ul><ul><li>Lean = Whole System </li></ul>
  7. 7. Small Slices are Best <ul><li>Estimates are waste </li></ul>
  8. 8. Make Work Visible
  9. 9. Make Work Visible <ul><li>Can't improve what you can't see </li></ul><ul><li>Exposes knowledge </li></ul><ul><ul><li>Makes implicit -> explicit </li></ul></ul><ul><li>Metrics provide Guidance </li></ul><ul><ul><li>What's right? </li></ul></ul><ul><ul><li>What's wrong? </li></ul></ul>
  10. 10. Measurements <ul><li>Lead Time </li></ul><ul><ul><li>Request to Delivery </li></ul></ul><ul><li>Cycle Time </li></ul><ul><ul><li>Work Begins to Work Ready to Deliver </li></ul></ul><ul><li>Throughput </li></ul><ul><ul><li>Little's Law for Queuing Theory </li></ul></ul>
  11. 11. Theory of Constraints <ul><li>Cause of Delays </li></ul><ul><ul><li>Long feedback cycle </li></ul></ul><ul><ul><li>Building unnecessary features </li></ul></ul><ul><ul><li>Overbuilding features </li></ul></ul><ul><li>Result of Delays </li></ul><ul><ul><li>Finding bugs gets harder </li></ul></ul>
  12. 12. Queue & WIP Limits
  13. 13. Queue & WIP Limits <ul><li>Limit Queue Size </li></ul><ul><li>Forces Bottlenecks Upstream </li></ul>
  14. 14. Goal: Single-Piece Flow <ul><li>Work ONE thing to completion </li></ul><ul><ul><li>&quot;Swarming&quot; </li></ul></ul>
  15. 15. What about Iterations? <ul><li>Artificial boundary? </li></ul><ul><li>How about Feature-based (MFV)? </li></ul>
  16. 16. Support/Service Provider <ul><li>Multiple Classes of Service (QoS) </li></ul><ul><ul><li>Normal </li></ul></ul><ul><ul><li>Expedited </li></ul></ul>
  17. 17. Lean = Whole System <ul><li>Allocate capacity strategically </li></ul><ul><ul><li>Delivering Value to Customers </li></ul></ul><ul><ul><li>Solving Problems </li></ul></ul><ul><ul><li>Sustainability </li></ul></ul><ul><ul><li>Support </li></ul></ul><ul><li>Optimize for the Whole System </li></ul><ul><ul><li>More features faster doesn't mean improved sales </li></ul></ul>
  18. 18. Not The End <ul><li>But I'll Take Questions… </li></ul><ul><li>My “tweet stream”: </li></ul><ul><ul><li>http://www.scribblelive.com/Event/LeanSSC_2010?Page=0 </li></ul></ul>

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