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Agile Planning
September Central Indiana MPUG
Matt Block
Quick Introduction
Developer by trade – CS Major from Purdue (Go Boilers!) – Developer at large manufacturing company
Development Manager – Small software company – Introduced Agile
Product Manager/Product Owner – Sounded good at the time
Development Manager – Large Software company – Leading Agile Transformation
AgileIndy – Founding Member/Organizer
Copyright © 2012 Development Block, LLC
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Agenda
Agile Planning – Common Myths
– Agile means no plans
– You can’t do fixed date projects in agile
Agile Release Planning – An Overview
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AGILE MEANS NO PLANS
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The Agile Manifesto
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Individuals and Interactions
Working Software
Customer Collaboration
Responding to Change
Processes and Tools
Comprehensive Documentation
Contract Negotiation
Following a Plan
over
over
over
over
Agile Teams Plan Constantly
“Plans are nothing; planning is everything.”
– Dwight D. Eisenhower
“I plan to re-plan”
– Popular agile t-shirt
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Levels of Planning in Agile
Strategy
Portfolio
Product
Release
Iteration
Daily
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• 1-2 times per year • Product evolution over time
• 3-4 times per year • Feature/Date tradeoffs
• Every 2-4 weeks • What will fit in this iteration?
• Every day • How to complete comittement
Planning in Scrum
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We Can’t Know Everything Up Front
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Agile is Iterative
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Accuracy vs. Precision
Plans must be accurate, gain precision over time – We’ll be done in Q3.
– We’ll be done in September.
– We’ll be done on September 10.
Precision is expensive, and more likely to be wrong.
While both accuracy and precision are desirable, accuracy is much more valuable.
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YOU CAN’T DO FIXED DATE PROJECTS IN AGILE
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The Agile Manifesto
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Individuals and Interactions
Working Software
Customer Collaboration
Responding to Change
Processes and Tools
Comprehensive Documentation
Contract Negotiation
Following a Plan
over
over
over
over
Planning in Scrum
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Fixed Date!
Fixed Dates in Scrum
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Fixed Date
What About Utilization?
“Attempts to force non-deterministic systems to operate at greater than 80% efficiency will cause short bursts of stabilization followed by extreme periods of destructive and unpredictable variations from that goal.”
- W. Edwards Deming
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The Iron Triangle
Quality is part of scope
– It is built in from the beginning, not “tested in” at the end.
Value is part of scope
– Higher value items are delivered sooner
“Depth” is part of scope
– Do you need a Porsche or will a Kia do?
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Scope
Cost Schedule
The Release Burndown
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0
100
200
300
400
500
600
Release Burndown Release Date
RELEASE PLANNING IN AGILE
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Levels of Planning in Agile
Strategy
Portfolio
Product
Release
Iteration
Daily
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• 1-2 times per year • Product evolution over time
• 3-4 times per year • Feature/Date tradeoffs
• Every 2-4 weeks • What will fit in this iteration?
• Every day • How to complete comittement
What is It?
Usually trying to answer questions like…
– How much can be done by a given date?
– When can this set of features be shipped?
– How many teams do we need working on this project?
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What is Needed?
Prioritized, estimated backlog
– High level estimates from the team that will likely do the work.
– Prioritized by business value.
Velocity
– Average amount of work a given team can complete in a given sprint.
– Usually use the previous 8 – 12 sprints.
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Velocity?
Agile teams usually use relative estimates, not precise estimates
– This feature is about the same as that one.
– Often expressed as Story Points using a modified Fibonacci sequence (1, 2, 3, 5, 8, 13, 20, 40, … )
A team’s Velocity is the sum of the story points for all of the user stories/features that are completed in a sprint
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Getting Confidence Intervals
We can obtain the 90% confidence intervals using a team’s historical velocity values from recent sprints.
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26
28
28
30
30
31
32
35
Sort the velocities from the previous 9 sprints.
Throw out the highest and lowest. The remaining highest and lowest
is your 90% confidence range. www.mountaingoatsoftware.com
has good tools to help with this
Using Confidence Intervals
Apply the confidence intervals to your backlog to get a better idea of how much work will be done by a given date.
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We will almost certainly get here (8x26)
At our median velocity, we’ll get here (8x30)
The most we could realistically expect is here (8x32)
Using Confidence Intervals
Apply the confidence intervals to your backlog to determine when a given set of features will be done.
– We will almost definitely be done in 20 sprints (500 / 26)
– At our median velocity, we will be done in 17 sprints (500 / 30)
– The best we could realistically expect is to be done in 16 sprints (200 / 32)
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Burndown with Confidence!
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0
100
200
300
400
500
600
Release Burndown Release Date
Credits and References
Mike Cohn
– http://www.mountaingoatsoftware.com
– Blog, Books, Articles, Presentations
– Agile Estimating and Planning, Succeeding with Agile
– Portions of this presentation were taken from his redistributable Introduction to Scrum presentation
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Contact Information
Matt Block
– Email: [email protected]
– Blog: http://www.developmentblock.com
AgileIndy
– Meetup: http://www.meetup.com/agileindy/
– Meet 2nd Wednesday @ 5:30
29 Copyright © 2012 Development Block, LLC