get started with lean software development by andreas hägglund

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Andreas Hägglund I run projects and make organizations more efficient

Get Started With Lean Software Development

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Get started with Lean Software Development

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Lean & Agile Origins

1990 1996 2003

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Lean Management

Lean is about quickly deliver customer value

from concept to cash, by minimizing waste.

Shigeo Shingo: “It’s only the last turn of

the bolt that tightens it – the rest is just

movement”

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Optimize the Whole

Principles of Lean Management

1. Create Long Term Business Value

2. Continuous Learning / Improvements

3. Reduce Waste

4. Increase Flow

5. Respect

Respect

Re

du

ce

Wa

ste

Inc

rea

se

Flo

w

Co

nti

no

us

Imp

rove

me

ne

t

Value

“A bad system will beat a

good person every time”

- W. Edwards Deming

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1. Eliminate Waste

2. Amplify Learning

3. Decide as Late as Possible

4. Deliver as Fast as Possible

5. Empower the Team

6. Build Integrity In

7. See the Whole

Lean Software Development

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1 – Eliminate Waste (uselessness)

1. Defects

2. Overproduction – Extra Features

3. Transportation - Handoffs

4. Waiting - Delays

5. Inventory - WIP

6. Motion – Task Switching

7. Processing – Unneeded Processes (8. Unused Talent/Skill)

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Don’t build features

that nobody needs right

now

Don’t write more spec than you can code

Don’t write more code than you can test

Don’t test more code than you

can deploy

4 Simple Ways of Reducing Waste

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1. Visualize the Workflow

2. Limit Work-in-Progress (WIP)

3. Measure and Manage Flow

4. Make Process Policies Explicit

5. Use Models to Evaluate Improvement

Opportunities

“Pull” Reduces WIP & Delays

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Continous Improvement

Waiting

Extra Features

Wrong Features

Paperwork

Bugs

Work In Progress

Task Switching

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See the waste...

Suggest feature

Specify feature

Develop feature

Test feature

Deploy feature

Use/pay feature

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@ahab1972 © Andreas Hägglund 11K

... And eliminate it!

See the waste...

Suggest feature

Specify feature

Develop feature

Test feature

Deploy feature

Use/pay feature

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@ahab1972 © Andreas Hägglund 11K

... And eliminate it!

See the waste...

Suggest feature

Specify feature

Develop feature

Test feature

Deploy feature

Use/pay feature

1 h

ou

r

120 h

ou

rs

16

ho

urs

24 h

ou

rs

16

ho

urs

40

ho

urs

4 h

ou

rs

24

ho

urs

1 h

ou

r

24

ho

urs

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... And eliminate it!

But also minimize unevenness and overburden

See the waste...

Suggest feature

Specify feature

Develop feature

Test feature

Deploy feature

Use/pay feature

1 h

ou

r

120 h

ou

rs

16

ho

urs

24 h

ou

rs

16

ho

urs

40

ho

urs

4 h

ou

rs

24

ho

urs

1 h

ou

r

24

ho

urs

38 hours

232 hours

----------------

16% Efficiency

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2 - Amplify Learning

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Information Radiators Visualizes Work

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If you could have only one information radiator;

1. What would it show?

2. Where would you put it?

3. When would you study it?

Radiators Increases learnings

Todo Dev Test Done

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Do you need to set the entire architecture upfront?

Do you need to decide on all the requirements?

What do you really, really need to decide up front?

3 - Decide As Late As Possible

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1 person doing

Task Switching

4 – Deliver As Fast As Possible

4 people focusing

on 4 different things

4 people focusing

on 1 thing

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Work in Progress Through-Put

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Through-Put ROI

Time

Cashflow

1st Release

Inv

estm

en

t

Pa

yb

ack

Profit

Loss

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5 - Empower the Team

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No One Ever Washes a Rented Car

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6 - Build Integrity In

0% Flaws

0% Defects

0% Decay

Simplicity

Fast Feedback

Refactoring

Testing

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7 - See The Whole

5 Why

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@ahab1972 © Andreas Hägglund 11K © Andreas Hägglund 11K

How To Get Started

Personal Level

1. Do the Gemba Walk

2. Limit Personal WIP

3. Visualize Work

4. Ask the 5 Why

5. Take time to reflect on

your process

Team Level

1. Map the value stream

2. Eliminate delays

3. Eliminate bottlenecks

4. Limit team WIP

5. Get your own car!

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1. Map your project stream, from idea to usage

2. List work time + idle time

3. Calculate Cycle Efficiency

4. Identify ways of increasing efficiency

Value Stream Mapping

Suggest feature

Specify feature

Develop feature

Test feature

Deploy feature

Use/pay feature

1 h

ou

r

12

0 h

ou

rs

16

ho

urs

24

ho

urs

16

ho

urs

40

ho

urs

4 h

ou

rs

24 h

ou

rs

1 h

ou

r

24

ho

urs

38 hours

232 hours

----------------

16% Efficiency

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Thank you

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andreashagglund

ah@11k.se

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Andon – Signaling System

Kanban – Sign/card

Jidoka – Autonomation (detecting

abnormalities)

Kaizen - (continuous) change for

better

Muda – Uselessness (7 wastes)

Mura – Uneveness/irregularity

Muri – Overburden

Genba – The real place

Lean Dictionary