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Agile In a Nutshell
Jonathan Rasmusson
Note - all images removed to fit 2MB limitActual presentation has much more content
Saturday, August 6, 2011
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What we’re going to cover
• How agile works
• What to expect
• What agile is
• Agile myths
• Review most popular methods
• Three steps towards agility
Saturday, August 6, 2011
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ToDo for date
Start executing
Clean houseDo dishesGet wineVacuumWrite poemGet handsomeWash carGet flowers
Iron shirtWork out
1 hr½ hr2 hr½ hr½ hr1 hr1 hr½ hr
½ hr½ hr
Ah! Didn’t really needthat shirt anyways.
This is what most people do ...
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ToDo lists
Tasks
Guesses
Master story lists
User stories
Estimates
Only instead of ... We use fancy names
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Master story1 day3 days5 days3 days1 day...
160 days
Create invoiceAdd userPrint reportBasic searchUpdate trade...
Iterations
1 2 3 n
‘The Plan’
Velocity
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What we’re going to cover
• How it works
• What to expect
• What agile is
• Agile myths
• Review most popular methods
• Three steps towards agility
Saturday, August 6, 2011
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We !ex on scope
Time Budget Quality Scope
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We have the same de"nition of ‘done’
Credit: http://www.sxc.hu/photo/422930
A plan?
A design?
A report?
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Working software is the primary measure of success
… are of no value to the customer.
Project plansTest plans
Requirements docsArchitectural diagrams
Analysis modelsSecurity reports
Deployment plans
Credit: http://www.flickr.com/photos/chris-hunt/3248785666/
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That means …
1 -2 wks
Add user
Book reservation
Add user
Print itinerary
AnalysisTestingDesignCodingEverything else
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And we have to work as one team
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April 27, 2011More overlap between roles
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What we’re going to cover
• How it works
• What to expect
• What agile is
• Agile myths
• Review most popular methods
• Three steps towards agility
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A common sense way of building software ...
Agile is
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That reminds us that ...
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software is about people.
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It’s messy. It isn’t perfect.It doesn’t follow a Gantt chart.
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Saturday, August 6, 2011
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It accepts the inherent complexity and uncertainty that comes with software delivery.
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It accepts the inherent complexity and uncertainty that comes with software delivery.
This isn’t ditch digging!
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12 PrinciplesContinuous delivery
Welcoming change
Frequent delivery
Working together
Motivated individuals
Face-to-face
Working softwareSustainable pace
Technical excellence
SimplicitySelf organization
Continuous improvement
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Agile myths
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Agile is a silver bullet
• You can fail just as spectacularly on an agile project as any other.
• You just might do it sooner.
Here ... instead of here
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Agile teams don’t do documentation
• More accurate to say agile teams don’t write any ‘unnecessary documentation’.
• Treat documentation like any other deliverable:
• Estimated and prioritized.
• Prefer face-to-face communication.
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Agile is anti-planning• Agile teams plan extensively
–Every quarter (release)–Every couple weeks (iterations)–Every day (daily stand-ups)
• Uses different tools–Burn downs vs Gantt charts
• Planning is very visible–Stakeholders know early if there is a problem
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Agile is undisciplined
• Truth is agile is very disciplined
• You have to test.
• You have to get feedback.
• You have to regularly ship.
• You have to update the plan.
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Agile is anti-architecture
Don’t build this ... if all you need is this.
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Agile doesn’t scale
• Agile scales like any other software process
• Instead of looking at how to scale up, try to imagine ways you could scale down.
- Not that great -
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What we’re going to cover
• How it works
• What to expect
• What agile is
• Agile myths
• Review most popular methods
• Three steps towards agility
Saturday, August 6, 2011
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Agile comes in many !avours
Extreme Programming (XP)
ScrumCrystal
DSDMLean
FDD
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Lean
I would like to buy a ToyotaCamry please.
Toyota’s ultra-lean manufacturing process.
Eliminating wasteSaturday, August 6, 2011
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Lean
• Very good high-level principles and practices
• Addresses system and organizational inefficiencies
• Not IT speci"c
• Can be harder to implement
Lean has a lot to offer. Very worth studying!
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Scrum
• A project management wrapper for incremental delivery of projects, independent of technology or business vertical.
• Can be used in non-IT projects.
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Scrum
• Easy to understand /pickup
• Low barrier of entry
• Speaks well to project managers
• Non-threatening
• Very popular
• Silent on engineering• Easy to do the easy stuff
while skipping on the hard
Easy to adapt - most non-threatening.
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Extreme Programming
• Popularized software engineering practices necessary for agile development
• Emphasizes –upfront testing–automation–evolutionary design–continuous integration
User story
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Extreme Programming
• Sound engineering practices
• Strong in development community
• First real popular agile method
• Very developer focused• Hard for other disciplines
relate• Sometimes characterized
by zealots
Essential engineering practices- unit testing - refactoring - continuous integration - test-Driven Design (TDD)
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What I recommend
Scrum XP
Lean
XP engineering practices
Start here
Chooselanguage
Study
or
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What we’re going to cover
• How it works
• What to expect
• What agile is
• Agile myths
• Review most popular methods
• Three steps towards agility
Saturday, August 6, 2011
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Step 1: Deliver something of value every week
week week week
1. Big problems down into smaller ones.2. Important stuff "rst.3. Forces you to test.4. You’ll want feedback.5. Change course when necessary.
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Step 2: Start doing these 4 software engineering practices today!
1. Unit testing2. Refactoring3. Test Driven-Development4. Continuous Integration
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Learn more
• Blog – agilewarrior.wordpress.com
• Twitter – @jrasmusson
• Email– [email protected]
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