NLJUG University Lean Architectuur

July, 8th, 2010

Sander van den BergGerard JanssenDenis KoelewijnGero Vermaas

Waste

Walls

Locked down

Architecture? Where?

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Architecture can be beautifull

Agenda

• Introduction• Lean Architecture - part 1

• Business and process principles• Mobile Food Finder case

• Lean Architecture - part 2• Artifact priciples• Workshop

• Lean Architecture - part 3• Communication principles• Workshop

• Wrap up

Introduction

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

• And all of this in 30 seconds

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

Lean Manufacturing Essence

Waste

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

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

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11 Lean Architecture Principles

1. Business3. Artifacts

2. Process4. Communication

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Business Principles

Business Principle:Architecture initiated by business goals

Business Principle: Focus on Value Stream

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Process Principles

Process PrincipleThink Big, Act Small

Process Principle:Just in Time, Just Enough

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Process Principle: Incremental

development of architecture

Kanban Board

The Mobile Food Finder

A Case in two Acts

Achtergrond

We are ByrdCo, a joint venture of Yellow Pages and Cornucopia

Yellow Pages Co. Cornucopia Investors

ByrdCo

InvestorParent

Our company vision

Freedom through information

We have a Product Vision for our initial product: Mobile Food Finder

For people on the roadwho need to find a restaurantthe Mobile Food Finderis a mobile applicationthat finds a nearby restaurant.Unlike other food findersour product is backed by a marketplace that brings restaurants and guests together.

Long term: CEO’s Plan for World Domination

1: Grab market share 2: Advertising 3: Reservationoutsourcing

Short term: we need to prove we are a viable business

•3 months initial investment•Go/No Go for further

investment 3 months after live

•Will host anything necessary on their infrastructure

15 JanNow

1 FebStart development

1 MayGo Live

1 JulyGo/No Go

These are the stakeholders forour Mobile Food Finder

Restaurant Owner

Reviewer

Investor

Parent Corporation

Party Organizer

Mobile Food Finder

Restaurant Guest

These are the requirements for Restaurant Guests

RequirementNavigation & Location based filteringFiltering on restaurant details (menu, opening times, ambiance...)Ratings & ReviewsDietary needs (vegetarian, halal, lactose free...)Support making reservationsOrganize partySave moneyPhoto and Video in restaurant recommendations

These are the requirements for Restaurant Owners

Pimp my restaurant details(Menu) promotionsInsight in hit/click-through statistics for my restaurantIdentify userSponsored promotionReservation systemPay subscription

Architectural Context

- iPhone client for Restaurant Guests

- Web Client for Restaurant Owners

- Contract for data updates: basic restaurant info and location info (batchfiles)

- For now, need to integrate into mother company IT (corp security constraints are an issue)

Existing Infrastructure

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Artifact Principles

Artifacts Principle: Comprehensible over comprehensiveness

Artifacts Princpiple: Freedom where possible, standardize

where needed

Artifacts Principle:Travel Light

Act 1

Assignment: create vision(and arch backlog?)

Architecture Vision

A3This goes on:

Constraints

Architecture Backlog

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Communication Principles

Architecture emerging from projects

Always Involved

All hands on deck early on

Act 2

We have found that we are aheadin the dietary needs space

Intolerances Dieting Ideological / Religious

We have revised our Product Vision

For people on the roadwho need to find a restaurantthe Mobile Food Finderis a mobile applicationthat finds a nearby restaurant.Unlike other food findersour product will support people in their dietary needs.

These are the stakeholders forour Mobile Food Finder

Restaurant Owner

Investor

Parent Corporation

Mobile Food Finder

Restaurant Guest

Architectural Context 2

- Need to integrate with Weight Watchers IT

- Need to decouple from mother company IT infrastructure