Agile Estimation

Zeist, 10 juni 2013Sid B. Dane

Agile Estimation | june 2013

Contents

Cone of UncertaintyYesterday’s WeatherPrinciples of Agile EstimationLean Software DevelopmentReaching ConsensusReferencesContact information

Cone of Uncertainty

Better

Yesterday’s weather

Principles of Agile Estimation

Lean Software Development

Origin

Lean software development is a translation of lean manufacturing and lean IT principles and practices to the software development domain. Adapted from the Toyota Production System, a pro-lean subculture is emerging from within the Agile community.

Bron: Wikipedia

Lean Software Dev: 7 principles and 22 tools

Eliminate Waste Seeing Waste, Value Stream Mapping

Amplify Learning Feedback, Iterations, Synchronization,

Set-Based Development

Decide as Late as Possible Options Thinking, The Last

Responsible Moment, Making Decisions

Deliver as Fast as Possible Pull Systems, Queuing Theory, Cost of

Empower the Team Self-Determination, Motivation,

Leadership, Expertise

Build Integrity In Perceived Integrity, Conceptual

Integrity, Refactoring, Testing

See the Whole Measurements, Contracts

"Think big, act small, fail fast; learn rapidly“ --- Mary and Tom Poppendieck

Reaching consensus

Five requirements of consensus decision-making

Inclusion. As many community members as possible should be involved in the process. Nobody should be excluded or left out (unless they ask to be excluded).

Participation. Not only is every person included, but each and every person is also expected to participate by contributing opinions and suggestions. While there are various roles that others may have, each person has an equal share (and stake) in the final decision.

Co-operation. All the people involved collaborate and build upon each other's concerns and suggestions to come up with a decision or solution that will satisfy everyone in the group, rather than just the majority (while the minority is ignored).

Egalitarianism. Nobody's input is weighed more or less than anyone else's. Each has equal opportunity to amend, veto, or block ideas.

Solution-mindedness. An effective decision-making body works towards a common solution, despite differences. This comes through collaboratively shaping a proposal until it meets as many of the participants' concerns as possible.

I.N.V.E.S.T. in your Stories

IndependentNegotiableValuableEstimable

Small enoughTestable

So many stories, so little time…

“Don’t spend too much time on estimating.

The goal of the estimates is to gain a general understanding of the cost of the

system or product. This is used to determine whether it is economic to

develop it. Be aware of diminishing returns.

Do enough, but not too much.”

Timebox per story estimate

An egg timer can be used to ensure that discussion is structured; the Moderator may at any point turn over the egg timer and when it

runs out all discussion must cease and another round of

poker is played. The structure in the conversation is re-introduced by the soap

boxes.

Different opinions: average or max?

What happens to the sprint if…• The 5’s got it and it turned out to be an 8?• The 8’s got it and it turned out to be a 5?

Questions?

Questions?Questions?

References

Dr. Christoph Steindl (IBM): Estimation in Agile projectsKen Schwaber: Scrum MethodologyMike Cohn: Agile Estimation and PlanningGunther Verheijen: Scrum KickstartWikipedia:

Planning Poker Lean Software Development

WikiHow: How to Reach a ConsensusMary and Tom Poppendieck: Lean Software DevelopmentSid B. Dane: Optimization has no Business Value

Contact information

• Capgemini Nederland B.V. Reykjavikplein 1 3543 KA Utrecht

• Sid B. Dane

sid.dane@capgemini.com

@SidOnAgile

http://nl.linkedin.com/in/siddane/

www.capgemini.com

About Capgemini

With more than 120,000 people in 40 countries, Capgemini is one of the world's foremost providers of consulting, technology and outsourcing services. The Group reported 2011 global revenues of EUR 9.7 billion.Together with its clients, Capgemini creates and delivers business and technology solutions that fit their needs and drive the results they want. A deeply multicultural organization, Capgemini has developed its own way of working, the Collaborative Business ExperienceTM, and draws on Rightshore ®, its worldwide delivery model.

Rightshore® is a trademark belonging to Capgemini

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