businesscase for-quality
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The Business Case for Quality
by Iwein Fuld
Thursday, September 26, 13
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Iwein Fuld
@iweinfuld
skype: iwein.fuld
Thursday, September 26, 13
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⧭Define Quality
⧬Cost of Software vs. Quality
⧬Benefits of Quality
⧬How does this apply?
⧬
Thursday, September 26, 13
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working = Quality?
If you don’t know how to prove that it works, you have no business building it.
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Development is not easy
AT ALL
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It’s hardto get it right
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shit happensThursday, September 26, 13
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No blueprint
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Think ahead
Thursday, September 26, 13
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⧭Define Quality
⧭Cost of Software vs. Quality
⧬Benefits of Quality
⧬How does this apply?
⧬
Thursday, September 26, 13
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cost of software
Gras gaat niet harder groeien als je eraan trekt.
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0.5 1.0 1.5 2.0 2.5 3.0
5
10
15
20
Computed by Wolfram»Alpha
Dev Test Acceptance
Production
The cost of fixing software defectsas a function of defect maturity
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Novice
Average
top 10%
Elite
Developer productivityvs
Developer skills
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20 devsLarge teams
vsSmall teams 4 devs
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4 eliteSmall elite teams
vsLarge teams
20 average
http://www.qsm.com/sites/www.qsm.com/themes/diamond/docs/process_01.html
Thursday, September 26, 13
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⧭Define Quality
⧭Cost of Software vs. Quality
⧭Benefits of Quality
⧬How does this apply?
⧬
Thursday, September 26, 13
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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
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Better feedback
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Better feedbackNow
Goal
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SPEED
Thursday, September 26, 13
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⧭Define Quality
⧭Cost of Software vs. Quality
⧭Benefits of Quality
⧭How does this apply?
⧬
Thursday, September 26, 13
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Introduce XP practices
Hire for high quality
Lower budgets
Tighten deadlines
Iterate fasterThursday, September 26, 13
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Quality
cheap…
fast…low risk…
Thursday, September 26, 13
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Quality
cheap…
fast…low risk…
≣Thursday, September 26, 13
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Thursday, September 26, 13