Agile Development: How it WorksDamon Poole

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Damon Poole

Founder/CTO of AccuRev, the leader in Agile SCM.

Focused on methodology for 17 years

Designer/architect of award-winning software

Creator of Hyper Agile methodology

Most recent product, AccuWorkflow, developed using Hyper Agile

Author of various articles on Agile development

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Problems with Traditional Development

Poor usability Slow to respond to customer/market demand Extremely difficult to accurately predict Questionable quality Lots of inefficiencies from rework and cancelled or

shelved work Hard to see the root cause of problems “This time we’ll do it right!” Burnout, job dissatisfaction

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Problems with Agile Development

Exact benefits are often poorly articulated

The exact relationships between specific practices and specific benefits are poorly articulated

The perception that: it scales poorly/it is only for small teams

you need to use 3x5 cards, collocation, and pair programming

it requires generalists

it requires a team of all senior engineers

Confusion about what exactly to do (“Agile isn’t a methodology, it is a set of principles”)

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Requirements for Mainstream Agile

Clear benefits

Uses existing team members

Independent of application domain

Can be adopted piecemeal

Straightforward implementation

Scaleable

Appropriate for distributed development

How and why it works is obvious to everyone involved

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The Core: How it Works

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Primary vs Secondary Benefits

Agile

People

Other

Traditional

People

Other

Same as last release

Higher QualityFaster ROI

More FlexibilitySecondary Benefits

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Primary vs Secondary Benefits

People

Other

Short IterationsTDD

3x5 CardsRefactoring

Continuous Int

People

Other

Same as last releaseLong Iterations

Higher QualityFaster ROI

More FlexibilitySecondary Benefits

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Primary vs Secondary Benefits

People

Other

Short IterationsTDD

3x5 CardsRefactoring

Continuous Int

People

Other

Same as last releaseTDD

RefactoringContinuous Int

Secondary Benefits

Long Iterations

Higher QualityFaster ROI

More FlexibilitySecondary Benefits

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Primary vs Secondary Benefits

People

Other

Short IterationsTDD

3x5 CardsRefactoring

Continuous Int

Higher QualityFaster ROI

More FlexibilitySecondary Benefits

People

Other

TDD

RefactoringContinuous Int

Short Iterations Higher QualityFaster ROI

More FlexibilitySecondary Benefits

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More ROI… Faster

Traditional

Agile

Features by ROI

plan $$

$ $$ $$$

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Rescheduling Effort

prepare write testscode

(optional) (optional)

Traditional

Agile

test

final qualification testingdebug

Deliver to customer

Testing bottleneck

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Complexity

n=4O(n2)~16 potential entanglements

10 10 10 10 10 10 60100 100 100 100 100 100 600

603,600

Traditional

Agile

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One Piece FlowPotential work items

Existing Incoming

Business value and ROI calculator

Requirements

Design

Code

Unit Test

Demo

Write all tests

Deliverable

Integrate

System Test

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Better Framework

problems (waste) are immediately apparent the success/failure of corrective actions are immediately apparent good behavior is encouraged and bad behavior is discouraged existing management skills are much better leveraged

Traditional

Agile

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Enabling Practices

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Recommended Enabling Practices Chunking/Multiple Parallel Iterations

Development Hierarchy

Quality quotient

Test Driven Development

Continuous Integration

Refactoring

Component based development

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Other Common Agile Practices

Stand up meetings

Pair programming

Co-location

Self-managing teams

Customer on-site

Shared code ownership

Stacking teams with senior developers

3x5 cards (!?)

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Coding Bucket Sizes: Before

coding

1 day 2 days 1 week 2 weeks 1 month > 1 month

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Coding Bucket Sizes: After

1 day 2 days 1 week 2 weeks 1 month > 1 month

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Parallel Iterations

41 2 3Months

Majority of work

Exceptions

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Everyone interdependent via mainline

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Developer Changes vs. Check-ins

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Development Hierarchy Stability/Maturity

Always shippable

Devs

Teams

Integration

QA

Other potential elements Major features Smoke test passed Needs tests Continuous Integration

passed Code review Demo Ready for QA

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One Piece Flow

Always shippable

Devs

Teams

Integration

QA

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Getting Started with Agile

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Resources

http://damonpoole.blogspot.com

http://agilealliance.com

Agile Software Development with Scrum, Ken Schwaber & Mike Beedle

Extreme Programming Explained - 2nd Edition, Kent Beck

Lean Software Development, Mary Poppendieck and Tom Poppendieck

“How Agile Works”, Free 1-hour on-site seminar, Damon Poole

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Agile POC Program

Try Agile in your organization for 6 months

You supply the people and the project

AccuRev supplies: Complete Agile tool stack with installation and training

Agile coach

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Contact info

Damon Poole

AccuRev

damon@accurev.com

http://damonpoole.blogspot.com

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End

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AccuRev’s Support for Agile Development hierarchy

Private branches

Parallel iterations

Drag and drop issues anywhere in hierarchy

Drag and drop process changes

Leading edge refactoring support

Performance via WAN removes integration delays

Integration with Cruise Control, Anthill, etc.

Integrated with the 8 leading issue tracking systems and also built-in issue tracking

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“As a result of merger and acquisition activity, a move toward more Agile processes and offshore development, AccuRev was the optimal solution to manage this increasingly parallel development model efficiently.”

Rick Hoff, CTO, Tyler Technologies

AccuRev: Best-of-Breed Agile Dev Tool

Fastest growing SCM company in the world

Only SCM product to win 2 Jolt Product Excellence awards

Committed to Agile Development

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Some of our 400+ customers

Embedded Systems Software Products Enterprise ITEmbedded Systems Software Products Enterprise IT

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AccuRev for Agile