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Transcript of Businesscase for-quality
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, 13
Development is not easy
AT ALL
Thursday, September 26, 13
It’s hardto get it right
Thursday, September 26, 13
shit happensThursday, 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
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
Thursday, September 26, 13
Novice
Average
top 10%
Elite
Developer productivityvs
Developer skills
Thursday, September 26, 13
20 devsLarge teams
vsSmall teams 4 devs
Thursday, September 26, 13
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
⧭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 lowest cost
possible, paying the highest wages possible.Henry Ford
Thursday, September 26, 13
Better feedback
Thursday, September 26, 13
Better feedbackNow
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 fasterThursday, 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