Lean Software Development Principles

Lean Software Development Principles John P Vajda, PMP, CSM

Lean Software Development Principles ,[object Object],[object Object],[object Object]

A Lean History ,[object Object],[object Object],[object Object],[object Object],[object Object],Reference: http://en.wikipedia.org/wiki/Lean_manufacturing

The Seven Principles of Lean Thinking: + 22 Tools ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: http://en.wikipedia.org/wiki/Lean_manufacturing

Principle # 1: Eliminate Waste

The Seven Principles: Eliminate Waste ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1

The Seven Principles: Eliminate Waste ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1 Defects Defects Task switching & Motion Motion Waiting for the information Waiting Building the wrong thing Transportation Extra features Overproduction Paperwork or excess documentation Extra processing Partially work done Inventory Wastes of Software Development Wastes of Manufacturing

The Seven Principles: Eliminate Waste ,[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1

The Seven Principles: Eliminate Waste ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1

Principle # 2: Amplify Learning

The Seven Principles: Amplify Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 2

The Seven Principles: Amplify Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 2

The Seven Principles: Amplify Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 2

The Seven Principles: Amplify Learning ,[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 2

The Seven Principles: Amplify Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1

Principle # 3:Decide as Late As Possible

The Seven Principles: Decide as Late as Possible ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 3 High stakes decisions can be deferred until the last responsible moment High stakes decisions are made based on assumptions and with uncertainly Cost escalation is low, as issues are found incrementally Cost escalation is high when issues are found late Adaptable, change is manageable Rigid, change is costly Highest valued features first Order of Creation ( On day 1, We created requirements) Breadth First (seeing things in full view over time) Depth First (Drilling into the details too fast) Concurrent Sequential

The Seven Principles: Decide as Late as Possible ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 3

The Seven Principles: Decide as Late as Possible ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 3

The Seven Principles: Decide as Late as Possible ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 3 Real time information and feedback drives decisions Predictions and assumptions drives decisions Intuitive decision making Rational decision making Requires someone savvy to understand how the details will emerge and when it’s time to commit Needs an agreed to point to “zero” in on Delaying commitments Making early commitments Breadth First Depth First

The Seven Principles: Decide as Late as Possible ,[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 1

Principle # 4: Deliver as Fast as Possible

The Seven Principles: Deliver Fast as Possible ,[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4

The Seven Principles: Deliver Fast as Possible ,[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4

The Seven Principles: Deliver Fast as Possible ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4

The Seven Principles: Deliver Fast as Possible ,[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4 The larger the batch of work, the slower it will be completed, and the more utilization it will take.

The Seven Principles: Deliver Fast as Possible ,[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4 This is just a section of a P&L

[object Object],[object Object],The Seven Principles: Deliver Fast as Possible Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4

Principle # 5: Empowering the Team

The Seven Principles: Empower the Team ,[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 4

The Seven Principles: Empower the Team ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 5

The Seven Principles: Empower the Team ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 5

The Seven Principles: Empower the Team ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 5 ,[object Object],[object Object],Enable Motivation Track & Control Align People Organize & Staff Set Direction Plan & Budget Cope With Change Cope with Complexity Leaders Managers

The Seven Principles: Empower the Team ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 5 ,[object Object],[object Object],[object Object],[object Object],[object Object]

The Seven Principles: Empower the Team ,[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 5 ,[object Object],[object Object],[object Object],[object Object]

Principle # 6: Build Integrity In

The Seven Principles: Build Integrity Within ,[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6 a perquisite for perceived integrity How much mind share does it have? Is usability consistent? How much market share does it have? Does it have a consistent set of design principles? How well does it solve problems? Can the system evolve and mature? How does it keep up with changes in the domain? Does it have an effective balance between flexibility, maintainability, efficiency, and responsiveness? How intuitive is the system? Conceptual Integrity Perceived Integrity

The Seven Principles: Build Integrity Within ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6

The Seven Principles: Build Integrity Within ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6

The Seven Principles: Build Integrity Within ,[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6 Integration Tests Acceptance Testing System Tests Functional Testing Unit Tests Customer Tests Developer Tests

The Seven Principles: Build Integrity Within ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6

The Seven Principles: Build Integrity Within ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 6

The Seven Principles: See the Whole ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 7

The Seven Principles: See the Whole ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 7

The Seven Principles: See the Whole ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 7

The Seven Principles: See the Whole ,[object Object],[object Object],Reference: M & T Poppendieck, Lean Software Development . 2003 : Chapter 7

Appendix ,[object Object],[object Object],[object Object]

Lean Software Development Principles

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Lean Software Development Principles

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