Jonathan Rasmusson - · PDF file© Copyright 2009, Rasmusson Software Consulting...
Transcript of Jonathan Rasmusson - · PDF file© Copyright 2009, Rasmusson Software Consulting...
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© Copyright 2009, Rasmusson Software Consulting
Agile in a nutshell
Jonathan Rasmusson
http://agilewarrior.wordpress.com/
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© Copyright 2009, Rasmusson Software Consulting
Adaptive plans
The Waterfall HorrorFeature Show
- Coming soon to a project near you -
Beware Agile Software Delivery
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© Copyright 2009, Rasmusson Software Consulting
What we’re going to cover
• You already know agile planning
• What to expect
• De-bunk some myths
• Overview some agile methods
• 3 steps towards agility today
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© Copyright 2009, Rasmusson Software Consulting
Agile planning in a nutshell
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Too much to do, not enough time
Credit: http://www.flickr.com/photos/geneoh/
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ToDo List
Clean house
Do dishes
Get wine
Vacuum
Write poem
Get handsome
Wash car
Get flowers
Iron shirt
Work out
Alright, what do I need to do, to get ready for this date?
You make a list
Doing this alone makes you feel good
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ToDo for date
Looks like it shouldn’t take more than a couple of hours!
1 hr
½ hr
2 hr
½ hr
½ hr
1 hr
1 hr
½ hr
½ hr
½ hr
~ 8 hrs
You size things up
Clean house
Do dishes
Get wine
Vacuum
Write poem
Get handsome
Wash car
Get flowers
Iron shirt
Work out
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Dang, mom says she’s going be in in 11 hrs.
ToDo for date
Mostimportant
Leastimportant
Out of scope
You set some priorities
Clean house
Do dishes
Get wine
Vacuum
Write poem
Get handsome
Wash car
Get flowers
Iron shirt
Work out
1 hr
½ hr
2 hr
½ hr
½ hr
1 hr
1 hr
½ hr
½ hr
½ hr
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© Copyright 2009, Rasmusson Software Consulting
Roses are red, violets are blue,I hope you like this apple juice.Cheese and crackers too.
ToDo for date
Start executing
Clean house
Do dishes
Get wine
Vacuum
Write poem
Get handsome
Wash car
Get flowers
Iron shirt
Work out
1 hr
½ hr
2 hr
½ hr
½ hr
1 hr
1 hr
½ hr
½ hr
½ hr
That in a nutshell is what most people do
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© Copyright 2009, Rasmusson Software Consulting
Pssst
A little secret
We do the
same thing in
agile…
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ToDo list
Tasks
Guesses
=>Master story list
User stories
Estimates
Only instead of We use fancy names
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Add userPrint itineraryBook reservationCancel tripBook permitUpdate permitSearchCreate new deviceAdd swap tradeAdd optionCancel planBook carUpdate hotelChange profileAdd admin screen
Add FacebookDelete MySpaceUpdate Twitter
1wk 1wk 1wk
1wk
Mostimportant
Leastimportant
Out of moneyOut of timeNothing left
How does this make a plan?a date
a budget
a plan
½ done here
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© Copyright 2009, Rasmusson Software Consulting
What we’re going to cover
• You already know agile planning
• What to expect
• De-bunk some myths
• Overview some agile methods
• 3 steps towards agility today
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© Copyright 2009, Rasmusson Software Consulting
We flex on scope
Time Budget Quality Scope
Flex here
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© Copyright 2009, Rasmusson Software Consulting
A plan?
A design?
A report?
We have the same definition of done
Are we done raking
the leaves when:
Not at my house!
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Working software is the primary
measure of success
Are all fine
and dandy …
… but they are of no
value to the customer.
Project plans
Test plans
Requirements docs
Architectural diagrams
Analysis models
Security reports
Deployment plans
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That means …
1wk
Add user
Book reservation
Add user
Print itinerary
Analysis
Testing
Design
Coding
Everything else
100% complete
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VSBA Dev QA
And we have to work as one team
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© Copyright 2009, Rasmusson Software Consulting
May 1,
2009More overlap between roles
The team is accountable
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Analy
sis
Test
Code
Desig
n
Agile
Analysis Design Code Test
stage gated / big bang / all at once
Waterfall
VS
Analysis, design, testing, and coding are
continuous activities
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Some terms you’ll hear
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Iterative
1wk 1wk 1wk
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Iterative
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Time-boxed delivery
Credit Yogi: http://www.flickr.com/photos/yogi/1147960/
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Adaptive planning
original plan
reality
lost leaddeveloper
customer discovers whatthey really wanted
New Star Trekmovie
Price of oildrops 70%hard to change
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Characteristics of agile teams
xThe goalEmpowered
Self-directed
Adaptive
Flat hierarchy
Self-organizing
Smart talented people like working this way
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Agile Myths
What agile is not
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Agile is a silver bullet
• You can fail just as dramatically
• All your problems will still be there
– Agile will just highlight them sooner
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Agile teams don’t write
documentation
• More accurate to say agile teams don’t
write unnecessary documentation
• Agile teams prefer a face-to-face over
documentation
• Documentation gets treated
like anything else
– Prioritized, estimated, delivered
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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
– Project burn downs vs Gantt and PERT
• Planning is very visible
– Stakeholders know early if there is a problem
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Agile is anti-architecture
Don’t spend time designing this …
… if this is all that is needed.
Agile is anti-over-architecture
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Agile development doesn’t scale
• Agile scales just like any other method
– Not that great
• Instead of looking at how you can scale up
– See if there are ways you can scale down
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Agile teams don’t model
• Agile teams model
– They just don’t believe them
• The sooner they can
turn a model into working
software the better
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Agile is undisciplined
• Agile has been bruised by people taking the easy stuff – and leaving out he hard
• Truth is agile is very disciplined– You have to write tests
– You have to design
– You must regularly integrate your code
– You have to regularly release working software
– You must deliver something of value each iteration
• The more agile a team – the more disciplined
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Agile development is unpredictable
• Agile acknowledges the inherent complexity and uncertainty of software
• Agile quickly incorporates actual data into it’s forecasts
• It doesn’t dwell on reconciling actual and original plans
• Accepts that things are going to change, and incrementally re-plans when better data is available
Credit: http://www.flickr.com/photos/shadphotos/
If you crave predictability,
you picked the wrong profession
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Agile requires talented people
Project success
Skill-set of people
Creating valuable, innovative software requires skilled people
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© Copyright 2009, Rasmusson Software Consulting
What we’re going to cover
• You already know agile planning
• What to expect
• De-bunk some myths
• Overview some agile methods
• 3 steps towards agility today
![Page 38: Jonathan Rasmusson - · PDF file© Copyright 2009, Rasmusson Software Consulting jonathan@agilewarrior.com ... Title: PowerPoint Presentation Created](https://reader031.fdocuments.us/reader031/viewer/2022030411/5a9d97ec7f8b9a21688cbe7e/html5/thumbnails/38.jpg)
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Agile comes in many flavours
Extreme Programming (XP)
ScrumCrystal
DSDMLean
FDD
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Lean
I would like to
buy a Toyota
Prius please
Elimination of waste
Toyota’s ultra-lean manufacturing process.
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Lean
• Very good high-level
principles and
practices
• Addresses systems
and organizational
improvements across
the board
• Advice / practices are
not IT specific
• Harder to implement
Lean has much to offer – very worth of study
+ pluses - minuses
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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
• Low barrier of entry
• Easy to pick up
• Speaks well to project
managers
• Non-threatening
• Most popular
• Silent on engineering
• Easy to do the easy
stuff while skipping
the hard stuff
+ pluses - minuses
Easy to adapt – most non-threatening
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Extreme Programming (XP)
• Popularized software engineering
practices necessary for agile development
• Emphasizes
– upfront testing
– automation
– evolutionary design
– continuous integration
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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
+ pluses - minuses
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Options for adopting
XP
Scrum + XP
Scrum + XP + Lean
engineering practices
engineering practices spirit
full on
* 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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There is no one way
Do what works for you
Extreme Programming (XP)
ScrumCrystal
DSDM
Lean
FDD
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3 steps you can take
towards agility
today
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Deliver something of value every week
Week 1 Week 2 Week 3
Value!$
Most important Least importanttime
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• Agile is underpinned by technical
excellence
• Practices like these are essential:
• If you get these right
– everything else becomes a lot easier
Start doing these 4 practices
Unit testing
Refactoring
Test-Driven Design
Continuous integration
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Accept 3 simple truths
1. It is impossible to gather all the requirements
at the beginning of a project.
2. The requirements are guaranteed to change.
3. There will always be more requirements, than
time and money allow.
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Final words
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Final words
• No magic – you already think agile
• Expect change
• There is no one way
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Do I think everyone will one
day be doing agile?
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For the same reason most people
still don’t eat right or exercise.
No
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Agile is tough
Agile is hard work
Agile requires great discipline
Not everyone is into this kind of stuff!
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But it is a very natural way to work
It is a lot of fun
And it works – very well
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