ROI can not be used as a decision making anymore.

1. @gil_zilberfeld
ROI Is Dead!
Gil Zilberfeld

2. @gil_zilberfeld
Who Am I
Agile helper
Software improver
Author of “Everyday Unit Testing”
www.gilzilberfeld.com
www.everydayunittesting.com
@gil_zilberfeld

3. @gil_zilberfeld
There are two sides to ROI

4. @gil_zilberfeld
𝑅𝑂𝐼 =
𝑉𝑎𝑙𝑢𝑒
𝐶𝑜𝑠𝑡

5. @gil_zilberfeld
The Investment
We’re not good at measuring cost

6. @gil_zilberfeld
The basics
• Salaries
• Infrastructure
• Licenses
• Training

7. @gil_zilberfeld
Estimates

8. @gil_zilberfeld
Estimates are sometimes…
•… treated as commitments
•… inflated by others
•… waste time and money

9. @gil_zilberfeld
The cone of uncertainty
http://www.construx.com/Thought_Leadership/Books/The_Cone_of_Uncertainty/

10. @gil_zilberfeld
We suck at estimating

11. @gil_zilberfeld
𝑅𝑂𝐼 =
𝑉𝑎𝑙𝑢𝑒
?

12. @gil_zilberfeld
The Return
We’re not good at measuring value either

13. @gil_zilberfeld
Development
• Pair programming
• Unit testing
• Refactoring

14. @gil_zilberfeld
Testing
• Test strategy
• Bug finding
• Automation

15. @gil_zilberfeld
Product
• Prioritizing features
• Feature definition

16. @gil_zilberfeld
Management
• Environment
• Training and growth
• Removing impediments

17. @gil_zilberfeld
When do we measure the value?

18. @gil_zilberfeld
Do we understand impact?

19. @gil_zilberfeld
𝑅𝑂𝐼 =
?
?

20. @gil_zilberfeld
ROI Is Dead
What can we do instead?

21. @gil_zilberfeld
Why do we want ROI?

22. @gil_zilberfeld
We want to..
•Make better decisions
•… and feel confident about them
•Be able to manage the process
•… and feel confident about the level of control

23. @gil_zilberfeld
Plan with other
methods
http://blackswanfarming.com/cost-of-delay/

24. @gil_zilberfeld
Evaluate your
complexity
1. Just about everyone in the world has
done this.
2. Lots of people have done this,
including someone on our team.
3. Someone in our company has done
this, or we have access to expertise.
4. Someone in the world did this, but
not in our organization (and
probably at a competitor).
5. Nobody in the world has ever done
this before.
http://lizkeogh.com/2013/07/21/estimating-complexity/

25. @gil_zilberfeld
Collect your data

26. @gil_zilberfeld
Reduce task
variance
http://www.methodsandtools.com/archive/atddreadysprintbacklog.php

27. @gil_zilberfeld
Assume you’re
ignorant
http://www.amiclarke.com/unknownunknownsprint.htm

28. @gil_zilberfeld
Enumerate your
assumptions
http://blog.ecoastmarketing.com/2014/01/23/assumptions-the-failure-to-ask-questions/

29. @gil_zilberfeld
Plan for deliberate
discovery
“Ignorance is the single greatest
impediment to throughput.”
Dan North
http://dannorth.net/2010/08/30/introducing-deliberate-discovery/

30. @gil_zilberfeld
“When we work on making our
devices accessible by the blind, I
don’t consider the bloody ROI.”
Tim Cook

31. @gil_zilberfeld
Thank You!
• Questions?
• Contact me:
• @gil_zilberfeld
• http://www.gilzilberfeld.com
• http://www.everydayunittesting.com