Agile Engineering Practices Overview

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A brief overview of the Agile Engineering Practices, their costs and benefits, and using Lean's Value Stream Mapping and the Five Focusing Steps from the Theory of Constraints in order to evaluate the value of a practice. Also, what is expected from leadership while the practice is first being introduced.

Software

11 March 2016 © Agile Institute 2008-2016 1
Agile Engineering
Practices
An Overview
Prepared for the
Universidad TecnolÓgica
Nacional
by
Rob Myers
10 March 2016

11 March 2016 © Agile Institute 2008-2016 2
Test-Driven
Development
Continuous
Integration
Pair
ProgrammingCollective Code
Ownership
Relentless
Refactoring
Sustainable
Pace
Creative Slack
CRC Cards
ATDD
Mocks
Legacy
Characterization
Tests
Spikes
Emergent Design

11 March 2016 © Agile Institute 2008-2016 3

five focusing steps
1. Identify the constraint.
2. Exploit the constraint: Remove waste.
3. Subordinate all else to the
constraint: Allow the constraint to set
the pace.
4. Elevate the constraint: Invest wisely in
“more, better, faster.”
5. Repeat.11 March 2016 © Agile Institute 2008-2016 4

11 March 2016 © Agile Institute 2008-2016 5

11 March 2016 © Agile Institute 2008-2016 6

findings of Nagappan’s
IBM-Microsoft study
• Teams noted a 15–35% increase
in initial development time.
• Defect rates decreased between
40% & 90%.
11 March 2016 © Agile Institute 2008-2016 8

Laurie Williams’s findings
• Pairs were 15% slower.
• Pairs produced 15% fewer bugs.
11 March 2016 © Agile Institute 2008-2016 11
"Agility counts", The Economist, 20 Sep 2001

more subtle benefits
• Creative problem-solving.
• Self-discipline.
• Uninterrupted “Flow.”
• Egoless code.
• No “heroes.”
11 March 2016 © Agile Institute 2008-2016 12

11 March 2016 © Agile Institute 2008-2016 13
If it’s
painful,
do it
often.
-- attributed to Kent Beck, who is not a masochist.

what CI provides
• Unavoidable feedback.
• Emotionless gating.
• Thresholds and trends.
11 March 2016 © Agile Institute 2008-2016 14

what CI helps avoid
• Integration defects.
• Lingering broken builds.
• Lingering branches & branched
releases.
• Code freezes.
11 March 2016 © Agile Institute 2008-2016 15

11 March 2016 © Agile Institute 2008-2016 17
Test-Driven
Development
Continuous
Integration
Pair
ProgrammingCollective Code
Ownership
Relentless
Refactoring
Sustainable
Pace
Creative Slack
CRC Cards
ATDD
Mocks
Legacy
Characterization
Tests
Spikes
Emergent Design

11 March 2016 © Agile Institute 2008-2016 18
Rob.Myers@agileInstitute.com
http://PowersOfTwo.agileInstitute.com/
@agilecoach

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Agile Engineering Practices Overview

1. 11 March 2016 © Agile Institute 2008-2016 1 Agile Engineering Practices An Overview Prepared for the Universidad TecnolÓgica Nacional by Rob Myers 10 March 2016

2. 11 March 2016 © Agile Institute 2008-2016 2 Test-Driven Development Continuous Integration Pair ProgrammingCollective Code Ownership Relentless Refactoring Sustainable Pace Creative Slack CRC Cards ATDD Mocks Legacy Characterization Tests Spikes Emergent Design

4. five focusing steps 1. Identify the constraint. 2. Exploit the constraint: Remove waste. 3. Subordinate all else to the constraint: Allow the constraint to set the pace. 4. Elevate the constraint: Invest wisely in “more, better, faster.” 5. Repeat.11 March 2016 © Agile Institute 2008-2016 4

7. findings of Nagappan’s IBM-Microsoft study • Teams noted a 15–35% increase in initial development time. • Defect rates decreased between 40% & 90%. 11 March 2016 © Agile Institute 2008-2016 8

9. Laurie Williams’s findings • Pairs were 15% slower. • Pairs produced 15% fewer bugs. 11 March 2016 © Agile Institute 2008-2016 11 "Agility counts", The Economist, 20 Sep 2001

10. more subtle benefits • Creative problem-solving. • Self-discipline. • Uninterrupted “Flow.” • Egoless code. • No “heroes.” 11 March 2016 © Agile Institute 2008-2016 12

11. 11 March 2016 © Agile Institute 2008-2016 13 If it’s painful, do it often. -- attributed to Kent Beck, who is not a masochist.

12. what CI provides • Unavoidable feedback. • Emotionless gating. • Thresholds and trends. 11 March 2016 © Agile Institute 2008-2016 14

13. what CI helps avoid • Integration defects. • Lingering broken builds. • Lingering branches & branched releases. • Code freezes. 11 March 2016 © Agile Institute 2008-2016 15

14. 11 March 2016 © Agile Institute 2008-2016 17 Test-Driven Development Continuous Integration Pair ProgrammingCollective Code Ownership Relentless Refactoring Sustainable Pace Creative Slack CRC Cards ATDD Mocks Legacy Characterization Tests Spikes Emergent Design

15. 11 March 2016 © Agile Institute 2008-2016 18 Rob.Myers@agileInstitute.com http://PowersOfTwo.agileInstitute.com/ @agilecoach

Agile Engineering Practices Overview

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