Presented at Agile Slovenia 2013

1. Architecture &
Collaboration
cornerstones of continuous delivery
#AgileSlovenia @rachellaycock
Monday, 14 October 13

2. Monday, 14 October 13

3. Architecture &
Collaboration
cornerstones of continuous delivery
Monday, 14 October 13

4. Architecture &
Collaboration
Monday, 14 October 13

5. Agile 101
"Agile" team
Analysis + Design
Centralized QA
IT Operations
Development
Integration + QA
Release and operation
Testing + Showcase
Customer
Iteration
Monday, 14 October 13
0
1
2
3
4
The "last mile"

6. continuous delivery
Customer
Delivery team
Monday, 14 October 13
Constant flow of new features into production

7. Releasing frequently
feedback from users
reduce risk of release
John Allspaw: “Ops Metametrics” http://slidesha.re/dsSZIr
Monday, 14 October 13

8. Continuous Delivery is big
feedback from users
reduce risk of release
real project progress
Monday, 14 October 13

9. Continuous Delivery is big
Monday, 14 October 13

10. Continuous Delivery is big
Organisational Alignment
Release Management
Architecture
Monday, 14 October 13
Quality
Assurance
Continuous
Integration
Configuration
Management
Data
Management
Environments
& Deployment

11. Smells!
Monday, 14 October 13

12. smell: things are slow
smell: Confusion
smell: ivory towers
smell: it never gets better
#AgileSlovenia @rachellaycock
Monday, 14 October 13

13. smell: things are slow
Monday, 14 October 13

14. Monday, 14 October 13

15. ANTI-pattern: ball of MUD
Monday, 14 October 13

16. ANTI-pattern: ReAL ball of mud
Monday, 14 October 13

17. ANTI-pattern: tight coupling
Monday, 14 October 13

18. pattern: Loose coupling
Monday, 14 October 13

19. pattern: Micro services
Monday, 14 October 13

20. pattern:
Evolutionary architecture
Last responsible moment
Architect and develop for evolvability
Postel’s Law
Architect for testability
Conway’s Law
Monday, 14 October 13

21. pattern: untangling
Monday, 14 October 13

22. pattern: Feature Toggles
http://martinfowler.com/bliki/FeatureToggle.html
Monday, 14 October 13

23. pattern: branch by abstraction
http://continuousdelivery.com/wp-content/uploads/2011/05/branch_by_abstraction.png
Monday, 14 October 13

24. Monday, 14 October 13

25. ANTI-pattern: heavy risk
management
Monday, 14 October 13

26. pattern: lightweight risk mgmt
Monday, 14 October 13

27. smell: things are slow
smell: Confusion
smell: ivory towers
smell: it never gets better
#AgileSlovenia @rachellaycock
Monday, 14 October 13

28. smell: Confusion
Monday, 14 October 13

29. ANTI-pattern: Too much re-work
Monday, 14 October 13

30. pattern: automation
Monday, 14 October 13

31. ANTI-pattern:
massive org structure
Monday, 14 October 13

32. ANTI-pattern: silos
Monday, 14 October 13

33. ANTI-pattern: distance
Monday, 14 October 13

34. pattern: devops
Monday, 14 October 13

35. pattern: feature teams
Monday, 14 October 13

36. ANTI-pattern:
single point of failure
Monday, 14 October 13

37. pattern: value stream mapping
Product
opportunity
assessment
Product
planning and
estimation
Product
discovery
3 days 1 week
10 days
Final testing
and approval
Development
7 weeks
1 week
2
hours
Value-added time
Elapsed time
1 week
Monday, 14 October 13
10 days
3 days
5 days
2 days
Release

38. pattern: big visible charts
Monday, 14 October 13

39. pattern: iterative development
Customer
Delivery team
Monday, 14 October 13
Constant flow of new features into production

40. smell: things are slow
smell: Confusion
smell: ivory towers
smell: it never gets better
#AgileSlovenia @rachellaycock
Monday, 14 October 13

41. smell: ivory towers
Monday, 14 October 13

42. ANTI-pattern: civil architecture
Monday, 14 October 13

43. pattern: town planning
Monday, 14 October 13

44. pattern: SELF-organisation
Monday, 14 October 13

45. pattern: Architect For build,
run and deploy
Monday, 14 October 13

46. smell: things are slow
smell: Confusion
smell: ivory towers
smell: it never gets better
#AgileSlovenia @rachellaycock
Monday, 14 October 13

47. smell: it never gets better
Monday, 14 October 13

48. ANTI-pattern: BIG BANG
Monday, 14 October 13

49. pattern: wabi-sabi
Monday, 14 October 13

50. pattern: retrospectives
Monday, 14 October 13

51. smell: things are slow
smell: Confusion
smell: ivory towers
smell: it never gets better
#AgileSlovenia @rachellaycock
Monday, 14 October 13

52. Monday, 14 October 13

53. Thank you!
RACHEL LAYCOCK
http://thoughtworks.com
@rachellaycock
#AgileSlovenia @rachellaycock
Monday, 14 October 13

54. Resources
Books:
• Continuous Delivery - Jez Humble, Dave Farley
• Working Effectively with Legacy Code - Michael Feathers
• Release It - Michael Nygard
• Domain Driven Design - Eric Evans
Articles/Blogs:
• Branch by Abstraction - Jez Humble:
http://continuousdelivery.com/2011/05/make-large-scale-changes-incrementally-with-branch-byabstraction/
• Branch by Abstraction - Paul Hammant:
http://paulhammant.com/blog/branch_by_abstraction.html/
• Feature Toggles - Martin Fowler: http://martinfowler.com/bliki/FeatureToggle.html
• Evolutionary Architecture - Neal Ford: http://www.ibm.com/developerworks/views/java/
libraryview.jsp?search_by=evolutionary+architecture+emergent+design:
• Ball of Mud: http://www.laputan.org/mud/
• Demming - http://leanandkanban.wordpress.com/2011/07/15/demings-14-points/
• Coding Horror: http://www.codinghorror.com/blog/2007/11/the-big-ball-of-mud-and-otherarchitectural-disasters.html
Monday, 14 October 13