The Business Case
for Quality
by Iwein Fuld
Thursday, September 26, 13
Iwein Fuld
@iweinfuld
skype: iwein.fuld
Thursday, September 26, 13
⧭
Define Quality
⧬
Cost of Software vs. Quality
⧬
Benefits of Quality
⧬
How does this apply?
⧬
Thursday, September 26, 13
working = Quality?
If you don’t know how to prove that it works,
you have no business building it.
Thursday, September 26,...
Development
is not easy
AT ALL
Thursday, September 26, 13
It’s hard
to get it right
Thursday, September 26, 13
shit happens
Thursday, September 26, 13
No
blueprint
Thursday, September 26, 13
Think ahead
Thursday, September 26, 13
⧭
Define Quality
⧭
Cost of Software vs. Quality
⧬
Benefits of Quality
⧬
How does this apply?
⧬
Thursday, September 26, 13
cost of software
Gras gaat niet harder groeien als je eraan trekt.
Thursday, September 26, 13
Dev Test Acceptance
Production
The cost of fixing software defects
as a function of defect maturity
Thursday, September 26,...
Novice
Average
top 10%
Elite
Developer productivity
vs
Developer skills
Thursday, September 26, 13
20 devs
Large teams
vs
Small teams 4 devs
Thursday, September 26, 13
4 eliteSmall elite
teams
vs
Large teams
20 average
http://www.qsm.com/sites/www.qsm.com/themes/diamond/docs/process_01.htm...
⧭
Define Quality
⧭
Cost of Software vs. Quality
⧭
Benefits of Quality
⧬
How does this apply?
⧬
Thursday, September 26, 13
benefits of quality
There is one rule for the industrialist and that is: Make
the best quality of goods possible at the low...
Better feedback
Thursday, September 26, 13
Better feedback
Now
Goal
Thursday, September 26, 13
SPEED
Thursday, September 26, 13
⧭
Define Quality
⧭
Cost of Software vs. Quality
⧭
Benefits of Quality
⧭
How does this apply?
⧬
Thursday, September 26, 13
Introduce XP practices
Hire for high quality
Lower budgets
Tighten deadlines
Iterate faster
Thursday, September 26, 13
Quality
cheap…
fast…
low risk…
Thursday, September 26, 13
Quality
cheap…
fast…
low risk…
≣
Thursday, September 26, 13
Thursday, September 26, 13
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Businesscase for-quality

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Businesscase for-quality

  1. 1. The Business Case for Quality by Iwein Fuld Thursday, September 26, 13
  2. 2. Iwein Fuld @iweinfuld skype: iwein.fuld Thursday, September 26, 13
  3. 3. ⧭ Define Quality ⧬ Cost of Software vs. Quality ⧬ Benefits of Quality ⧬ How does this apply? ⧬ Thursday, September 26, 13
  4. 4. working = Quality? If you don’t know how to prove that it works, you have no business building it. Thursday, September 26, 13
  5. 5. Development is not easy AT ALL Thursday, September 26, 13
  6. 6. It’s hard to get it right Thursday, September 26, 13
  7. 7. shit happens Thursday, September 26, 13
  8. 8. No blueprint Thursday, September 26, 13
  9. 9. Think ahead Thursday, September 26, 13
  10. 10. ⧭ Define Quality ⧭ Cost of Software vs. Quality ⧬ Benefits of Quality ⧬ How does this apply? ⧬ Thursday, September 26, 13
  11. 11. cost of software Gras gaat niet harder groeien als je eraan trekt. Thursday, September 26, 13
  12. 12. Dev Test Acceptance Production The cost of fixing software defects as a function of defect maturity Thursday, September 26, 13
  13. 13. Novice Average top 10% Elite Developer productivity vs Developer skills Thursday, September 26, 13
  14. 14. 20 devs Large teams vs Small teams 4 devs Thursday, September 26, 13
  15. 15. 4 eliteSmall elite teams vs Large teams 20 average http://www.qsm.com/sites/www.qsm.com/themes/diamond/docs/process_01.html Thursday, September 26, 13
  16. 16. ⧭ Define Quality ⧭ Cost of Software vs. Quality ⧭ Benefits of Quality ⧬ How does this apply? ⧬ Thursday, September 26, 13
  17. 17. benefits of quality There is one rule for the industrialist and that is: Make the best quality of goods possible at the lowest cost possible, paying the highest wages possible. Henry Ford Thursday, September 26, 13
  18. 18. Better feedback Thursday, September 26, 13
  19. 19. Better feedback Now Goal Thursday, September 26, 13
  20. 20. SPEED Thursday, September 26, 13
  21. 21. ⧭ Define Quality ⧭ Cost of Software vs. Quality ⧭ Benefits of Quality ⧭ How does this apply? ⧬ Thursday, September 26, 13
  22. 22. Introduce XP practices Hire for high quality Lower budgets Tighten deadlines Iterate faster Thursday, September 26, 13
  23. 23. Quality cheap… fast… low risk… Thursday, September 26, 13
  24. 24. Quality cheap… fast… low risk… ≣ Thursday, September 26, 13
  25. 25. Thursday, September 26, 13

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