1.
Utrecht, 14th-16th October 2016
Need to estimate?
Let’s play poker!
Alessandro Ronchi
@aleron75

2.
Utrecht, 14th-16th October 2016
About me
● Magento specialist at Bitbull
● #realmagento contributor
● author, mentor
● conference speaker & organizer
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3.
Utrecht, 14th-16th October 2016
The challenge: estimate
A basic points & rewards Magento extension
● Customer earns 10 points on account registration
● Customer earns 5 points on newsletter subscription
● Customer earns (int) subtotal_amount points on order
● Show points balance in My Account
● Generate 10€ discount code* each 100 points
* discount code applicable if (subtotal_amount > 100)

4.
Utrecht, 14th-16th October 2016
The method: Planning Poker
“A consensus-based, gamified technique for estimating,
mostly used to estimate effort or relative size of development
goals in software development.”
Wikipedia

5.
Utrecht, 14th-16th October 2016
Why a game
Because it’s fun!

6.
Utrecht, 14th-16th October 2016
Basic rules
● Define estimate unit (or use dimensionless units)
● Estimate individual requirements
● Compare estimates
● Lowest and highest estimates generate discussion
● Discuss until consensus (or time limit) is reached
● If no consensus reached, let’s trust domain experts

7.
Utrecht, 14th-16th October 2016
Non-linear sequence
Use a non-linear sequence like:
1, 2, 3, 5, 8, 13, 20, 40, 100, ?
Benefit: higher estimate ➔ unleash more uncertainty

8.
Utrecht, 14th-16th October 2016
Interactive session
Web app: http://www.planitpoker.com
Room: http://bit.ly/2evGefG

9.
Utrecht, 14th-16th October 2016
Questions?

10.
Utrecht, 14th-16th October 2016
Thank you!