Introduction to the Lean principles for Sofware Development.

1. VALIDATED LEARNING
Òscar Vilaplana
dev@oscarvilaplana.cat
Paylogic
August 2014

2. VALIDATED LEARNING
A Tale of Business, Vanity
and Medieval Torture
Òscar Vilaplana
dev@oscarvilaplana.cat
Paylogic
August 2014

3. Progress

4. Learn

5. we failed

6. we failed
but at least we learned something

7. Failed

8. Learned

9. Learning is vital

10. What works?

11. What works?
What do customers want?

12. What works?
What do customers want?
Right path?

13. Goals

14. Demonstrate progress

15. Demonstrate progress
Discover truths

16. Demonstrate progress
Discover truths
Prevent failure

17. Can

18. Should

19. Sustainable

20. Break down & Test

22. Did it make the product better?

23. How do we know?

26. Plead guilty

27. Trial by ordeal

29. 208

30. ?

31. 2/3

33. Teaching the garden
to weed itself

34. Make truth reveal itself

42. Is there interest?

44. Expertise

45. Knowledge

46. Progress

47. According to plan

48. According to plan
High quality

49. According to plan
High quality
Expected costs

51. If nobody wants it,

52. If nobody wants it,
High quality, done in budget

54. If nobody wants it,

55. If nobody wants it,
High quality, done in budget

57. tchair → 36.8°C

58. tchair → 36.8°C
$ → 0

59. Experiment

60. Experiment: product

61. Experiment: product
Solve real problems

62. Experiment: product
Solve real problems
When ready, it has already customers

63. Questions

64. Do customers have this problem?

65. Do customers have this problem?
Would they buy a solution?

66. Do customers have this problem?
Would they buy a solution?
From us?

67. Do customers have this problem?
Would they buy a solution?
From us?
Can we build it?

68. Answers

71. Identify

73. What should we test?

74. What should we test?
What are the riskiest parts of the plan?

75. What should we test?
What are the leaps of faith?

76. Build-Measure-Learn

78. MVP

80. Min product for a loop turn.

81. Min product for a loop turn.
Min effort and dev time.

82. Min product for a loop turn.
Min effort and dev time.
Lacks essential features.

83. Min product for a loop turn.
Min effort and dev time.
Lacks essential features.
Measurable impact.

84. Minimum

86. 3rd party Apps?
Carrier choice?
3G?
iChat?
Calendar?
WiFi sync?
Word/Excel docs?

93. Any additional work
beyond what was
required to start learning
is waste.
No matter how important
it might have seemed at the time.

95. Vanity Metrics

97. Changes

98. Changes
Increase of sales

99. Changes
Increase of sales
More Changes

100. Changes
Increase of sales
More Changes
More increase of sales

103. Learn

105. Baseline

106. Baseline
Tune

107. Baseline
Tune
Pivot or Persevere

108. Kanban

113. Include validation: more productive

114. Include validation: more productive
Why build feature not part of test?

115. Include validation: more productive
Why build feature not part of test?
Why build story unless well understood?

116. Learn more

117. Learn more

118. Thanks