Seminar Lean Architectuur

May 18th, 2010Gerard JanssenDenis KoelewijnGero Vermaas

Agenda

• Introduction• Why Architecture?• Lean & Kanban backgroup• Interactive part: Architectural challenges• Lean Architecture: Principles & Process• Apply Principles and Process to your challenges• Bol.com Case• Wrap up•

Introduction

• Name• Role• Company• What do you expect from todays seminar?

Why Architecture?

3 C’s of Architecture

Connection Cohesion

Changeability

Architecture

Lean

Any use of resources for a purpose that is not adding value for the end customer is waste and should be

removed

Waste

• Lean is known for focus on reducing waste• muda, mura, muri

• Toyota identified the following forms of waste• Overproduction • Unnecessary movement of (intermediate) products• Inventory• Unnecessary movement of production equipment• Defects• Waiting• Over-processing• Overload

Lean principes

• Base your management decisions on a long-term philosophy, even at the expense of short-term financial goals.

• Create a continuous process flow to bring problems to the surface• Use “pull” systems to avoid overproduction• Build a culture of stopping to fix problems, to get quality right the first

time.• Standardized tasks and processes are the foundation for continuous

improvement and employee empowerment.• Use visual control so no problems are hidden.• Go and see for yourself to thoroughly understand the situation (genchi

genbutsu).• Make decisions slowly by consensus, thoroughly considering all options;

implement decisions rapidly• Become a learning organization through relentless reflection (hansei) and

continuous improvement (kaizen).

Kanban

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What is Kanban?

•Kan = Visual

•Ban = Board•

Interactive part: Architectural challenges

• Which Architectural challenges is your organization facing?

Lean Architecture

Lean Architecture enforces value creation by Balancing business and technical values/priorities and Converging focus of all stakeholders on the required actions, at the right time, at the correct level of detail

Lean Architecture Principles

Principle #1: Always Involved

Principle #2: Travel Light

Principle #3: Think Big, Act Small

Principle #4: All hands on deck early on

Principle #5: Just in Time, Just Enough

Principle #6: Architecture initiated by business goals

Principle #7: Focus on Value Stream

Principle #8: Comprehendible over comprehensiveness

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Principle #9: Incremental development of architecture

Principle #10: Architecture emerging from projects

Principle #11: Freedom where possible, standardize where needed

Lean Architecture Principles

1.Always involved2.Travel light3.Think big, act small4.All hands on deck early on5.Just in time, just enough6.Architecture initiated by business goals7.Focus on the value stream8.Comprehendible over comprehensiveness9.Incremental development of architecture10.Architecture emerging from projects11.Freedom where possible, standards where needed

Lean Architecture Process

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Product Backlog

SprintBacklog

PotentiallyShippableProduct

Increment

2 week sprint

Daily ScrumMeeting

Sprintplanning

Scrum based development

Architecture Kanban Board

- Vision - ....

ArchitecturalDeliverables

stakeholdersBusiness

OperationsProjects

Backlog Selected Ongoing Done

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Kanban based Lean Architecture

Product Backlog

SprintBacklog

PotentiallyShippableProduct

Increment

2 week sprint

Daily ScrumMeeting

Sprintplanning

Architecture Kanban Board

- Vision - ....

ArchitecturalDeliverables

stakeholdersBusiness

Operations

Backlog Selected Ongoing Done

Architecture and Development processes

Break

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References

• Xebia Bloghttp://blog.xebia.com/category/lean-architecture/

• “Lean Architecture” Linked In Grouphttp://www.linkedin.com/groups?home=&gid=2891065

• September 2010: Lean Architecture Open Space Conference