What does it mean to be Lean
Lean is having an increasingly pervasive presence in the software world these days. Lean Software Development has its seven principles and seven wastes and promises to improve efficiency and quality. Many of the most innovative software development companies profess to have their philosophical home in Lean Startup's 'Build-Measure-Learn' approach, rather than Agile. But is Lean the same as Agile? And what about the proponents of Lean UX who are challenging the emerging orthodoxy of Agile SDLC frameworks with slogans like "Agile doesn't have a brain"? In this session, we will explore the basic ideas of Lean thinking, similarities and differences between different flavors of Lean, how Lean can be applied to software development, and finally how Lean concepts can be used to expand the built-in 'inspect and adapt' cycles of Scrum to include learning about customer value.
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What does it mean to be Lean
- 1. to be LEAN? What does it MEAN Mathias Eifert
- 2. • Basic Lean concepts • The many flavors of Lean • Lean vs. Agile Agenda 2
- 3. About Me 3 • Business Analyst / Solutions Architect • Applied Lean principles for 15+ years – Statistical Process Control – Process Improvement – Software Development – Agile Coaching Mathias.Eifert@excella.com
- 4. What is Lean? Toyota Production System Highest quality, lowest cost, shortest lead time
- 5. • Eliminate waste • Optimize flow • Achieve sustainability Basic Ideas 5
- 6. Waste Any non-value added activity in a process Type 1: Enablers, (currently) required Type 2: Truly unnecessary
- 8. Features That Nobody Wants… 8
- 9. Identifying Waste 9 Reference: Poppendieck, Mary and Tom. Implementing Lean Software Development: From Concept to Cash. Addison-Wesley, 2006 Manufacturing • Inventory • Overproduction • Extra Processing • Transportation • Waiting • Motion • Defects Software • Partially Done Work • Extra Features • Relearning • Handoffs • Delays • Task Switching • Defects
- 10. • Reduce variability of work load • Limit work in progress • Optimize the whole value stream • Minimize cycle time Optimize Flow 10
- 13. Kanban
- 15. Kaizen 15 Continuous improvement through rapid, iterative learning.
- 19. Mary & Tom Poppendieck 7 Principles of Lean Software Development
- 20. 1. Eliminate waste 2. Build quality in 3. Create knowledge 4. Defer commitment 5. Deliver fast 6. Respect people 7. Optimize the whole Lean Development Principles 20 Mary and Tom Poppendieck, Implementing Lean Software Development: From Concept to Cash
- 21. Sound familiar? Lean influenced Agile
- 22. Lean Startup 22
- 23. Lean Startup 23 Build MeasureLearn PERSEVERE or PIVOT? Continuous Improvement Continuous Innovation
- 24. Lean UX 24
- 25. Lean UX 25 “Every decision you make about your offering is a customer experience decision.” Jeff Gothelf, Author “Lean UX”
- 26. Design as Hypothesis Lean UX 26 Concept Prototype Validate Internally Test Externally Retrospective
- 28. Working Software
- 29. • Created by engineers • No consideration for – Product management – Design – User Experience Jeff Gotthelf, Author “Lean UX” Agile Manifesto 29
- 30. AGILE doesn’t have a BRAIN Bill Scott, VP, Business Engineering and Product Development at PayPal
- 34. What Matters Most? 34 Features Outcome User Behavior Impact Organizational Goals Output
- 35. Build the Right Thing Build the Thing Right BML/HDD ATDD
- 36. We believe that • [doing this] • for [these people] • will achieve [this outcome]. We’ll know this is true when we see • [this market feedback]. Jeff Gothelf, Author “Lean UX” Testable Hypotheses 36
- 37. Impact Mapping 37 Gojko Adzic, impactmapping.org
- 40. When you are UNCERTAIN what to build
- 41. Not all Software is Equal 41 Process Support Product Development Uncertainty Requirements Unmet Needs Unrealized Needs
- 42. • WHAT: Eliminate waste, optimize flow, achieve sustainability • HOW: Rapid iterative learning • Agile incorporates Lean principles • Lean focuses on optimizing the whole value stream • Testable hypotheses to support business goals and enable Business Agility Summary 42