Slidedeck of the Lean Architecture University Session for the Dutch Java User Group (NLJUG) that was hosted at Xebia.

1. NLJUG University
Lean Architectuur
Sander van den Berg
Gerard Janssen
July, 8th, 2010 Denis Koelewijn
Gero Vermaas

2. Waste

3. Walls

4. Locked down

5. Architecture? Where?
5

6. Architecture can be beautifull

7. 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

8. Introduction
• Name
• Role
• Company
• What do you expect from todays seminar?
• And all of this in 30 seconds

9. Why Architecture?

10. 3 C’s of Architecture
Connection Cohesion
Architecture
Changeability

11. Lean

12. Lean Manufacturing Essence
Any use of resources for a purpose
that is not adding value for the end
customer is waste and should be
removed

13. 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

14. 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

15. 11 Lean Architecture Principles
1. Business 2. Process
3. Artifacts 4. Communication
15

16. Business Principles
16

17. Business Principle:
Architecture initiated by business goals

18. Business Principle:
Focus on Value Stream

19. Process Principles
19

20. Process Principle
Think Big, Act Small

21. Process Principle:
Just in Time, Just Enough

22. Process Principle:
Incremental
development of
architecture
22

23. Kanban Board

24. The Mobile Food Finder
A Case in two Acts

25. Achtergrond

26. We are ByrdCo, a joint venture of
Yellow Pages and Cornucopia
Yellow Pages Co. Cornucopia Investors
Parent Investor
ByrdCo

27. Our company vision
Freedom through information

28. We have a Product Vision for our
initial product: Mobile Food Finder
For people on the road
who need to find a restaurant
the Mobile Food Finder
is a mobile application
that finds a nearby restaurant.
Unlike other food finders
our product is backed by a
marketplace that brings
restaurants and guests together.

29. Long term: CEO’s Plan for
World Domination
1: Grab market share 2: Advertising 3: Reservation
outsourcing

30. Short term: we need to prove
we are a viable business
• Will host anything • 3 months initial investment
necessary on their • Go/No Go for further
infrastructure investment 3 months after live
1 May
15 Jan
Go Live
Now
1 Feb 1 July
Start development Go/No Go

31. These are the stakeholders for
our Mobile Food Finder
Restaurant Guest Restaurant Owner
Parent Reviewer
Corporation Mobile Food Finder
Investor Party Organizer

32. These are the requirements for
Restaurant Guests
Requirement
Navigation & Location based filtering
Filtering on restaurant details (menu, opening times, ambiance...)
Ratings & Reviews
Dietary needs (vegetarian, halal, lactose free...)
Support making reservations
Organize party
Save money
Photo and Video in restaurant recommendations

33. These are the requirements for
Restaurant Owners
Pimp my restaurant details
(Menu) promotions
Insight in hit/click-through statistics for my restaurant
Identify user
Sponsored promotion
Reservation system
Pay subscription

34. 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)

35. Existing Infrastructure

36. Artifact Principles
36

37. Artifacts Principle:
Comprehensible over comprehensiveness

38. Artifacts Princpiple:
Freedom where possible, standardize
where needed

39. Artifacts Principle:
Travel Light

40. Act 1

41. Assignment: create vision
(and arch backlog?)

42. Architecture Vision
Constraints
A3
This goes on:

43. Architecture Backlog

44. Communication Principles
44

45. Architecture emerging from projects

46. Always Involved

47. All hands on deck early on

48. Act 2

49. We have found that we are ahead
in the dietary needs space
Intolerances Dieting Ideological /
Religious

50. We have revised our Product Vision
For people on the road
who need to find a restaurant
the Mobile Food Finder
is a mobile application
that finds a nearby restaurant.
Unlike other food finders
our product will support people
in their dietary needs.

51. These are the stakeholders for
our Mobile Food Finder
Restaurant Guest
Restaurant Owner
Parent
Corporation
Mobile Food Finder
Investor

52. Architectural Context 2
- Need to integrate with Weight Watchers IT
- Need to decouple from mother company IT
infrastructure