Event Storming for Fun and Profit

Dan has been using Event Storming in a number of different contexts recently. He used it to model a legacy system, to design a new system, to understand several convoluted business processes, and primarily as an exercise in building shared understanding. He has also been coaching others and learning some surprising things about organisations. This session is a gentle introduction to Event Storming, some tips to help it along, and an experience report of Dan's recent adventures using it. Event Storming might just be the best thing since sliced domains.

Transcript

1. Event Storming for fun and profit Dan North @tastapod
2. @tastapod Once upon a time… Dan decided to explain Event Storming
3. @tastapod Once upon a time… Dan decided to explain Event Storming Dan
4. @tastapod Until finally… the audience could try Event Storming for fun and profit Once upon a time… Dan decided to explain Event Storming Dan
5. @tastapod Until finally… the audience could try Event Storming for fun and profit Once upon a time… Dan decided to explain Event Storming Dan The audience
6. @tastapod Until finally… the audience could try Event Storming for fun and profit Once upon a time… Dan decided to explain Event Storming Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
7. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience understood the basic mechanics of Event Storming Once upon a time… Dan decided to explain Event Storming Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
8. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
9. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
10. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
11. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
12. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
13. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience
14. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invited Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
15. @tastapod The audience understood the basic mechanics of Event Storming
16. @tastapod A domain event happened The audience understood the basic mechanics of Event Storming
17. @tastapod A domain event happened A command or external event affects our world The audience understood the basic mechanics of Event Storming
18. @tastapod A domain event happened A command or external event affects our world An actor The audience understood the basic mechanics of Event Storming
19. @tastapod A domain event happened A command or external event affects our world An actor An app The audience understood the basic mechanics of Event Storming
20. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question An app The audience understood the basic mechanics of Event Storming
21. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question A view or “read model” An app The audience understood the basic mechanics of Event Storming
22. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question “They all lived happily ever after” A view or “read model” An app The audience understood the basic mechanics of Event Storming
23. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question “They all lived happily ever after” “Once upon a time…” A view or “read model” An app The audience understood the basic mechanics of Event Storming
24. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question Time “They all lived happily ever after” “Once upon a time…” A view or “read model” An app The audience understood the basic mechanics of Event Storming
25. @tastapod A domain event happened A command or external event affects our world An actor Someone has a puzzle or question Time “They all lived happily ever after” “Once upon a time…” ? A view or “read model” An app The audience understood the basic mechanics of Event Storming
26. @tastapod More space than you think you need A domain event happened A command or external event affects our world An actor Someone has a puzzle or question Time “They all lived happily ever after” “Once upon a time…” ? A view or “read model” An app The audience understood the basic mechanics of Event Storming
27. @tastapod More space than you think you need A domain event happened A command or external event affects our world An actor Someone has a puzzle or question Time “They all lived happily ever after” “Once upon a time…” ? A view or “read model” An app The audience understood the basic mechanics of Event Storming
28. @tastapod More space than you think you need A domain event happened A command or external event affects our world An actor Someone has a puzzle or question Time “They all lived happily ever after” “Once upon a time…” ? An aggregate or subsystem A view or “read model” An app The audience understood the basic mechanics of Event Storming
29. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
30. @tastapod The audience learned about Event Storming a business process
31. @tastapod The audience learned about Event Storming a business process Until finally…
32. @tastapod The audience learned about Event Storming a business process Once upon a time… Until finally…
33. @tastapod The audience learned about Event Storming a business process Once upon a time… Until finally…
34. @tastapod The audience learned about Event Storming a business process Once upon a time… Until finally…
35. @tastapod The audience learned about Event Storming a business process Once upon a time… Until finally…
36. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
37. @tastapod The audience learned about Event Storming a legacy application
38. @tastapod The audience learned about Event Storming a legacy application
39. @tastapod The audience learned about Event Storming a legacy application
40. @tastapod The audience learned about Event Storming a legacy application
41. @tastapod The audience learned about Event Storming a legacy application
42. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
43. @tastapod The audience learned about Event Storming a new application
44. @tastapod Until finally… The audience learned about Event Storming a new application
45. @tastapod Until finally… Until finally… Until finally… The audience learned about Event Storming a new application
46. @tastapod Once upon a time… Until finally… Until finally… Until finally… The audience learned about Event Storming a new application
47. @tastapod Once upon a time… Until finally… Until finally… Until finally… The audience learned about Event Storming a new application
48. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
49. @tastapod The audience picked up some useful advice
50. @tastapod The audience picked up some useful advice Bring lots of stationery!
51. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to break up arguments
52. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to let arguments run! Be prepared to break up arguments
53. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to let arguments run! Be prepared to break up arguments Be a Time Cop
54. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to let arguments run! Be prepared to break up arguments Agree explicit ground rules Be a Time Cop
55. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to let arguments run! Be prepared to break up arguments Agree explicit ground rules It’s like an outboard motor Be a Time Cop
56. @tastapod The audience picked up some useful advice Bring lots of stationery! Be prepared to let arguments run! Be prepared to break up arguments Agree explicit ground rules It’s like an outboard motor Be a Time Cop Use a Pomodoro timer
57. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
58. @tastapod The audience understood some of the behaviours they could expect
59. @tastapod The audience understood some of the behaviours they could expect The disruptor
60. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all
61. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all The wallflower
62. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all The wallflower The “helper”
63. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all The wallflower The “helper” The actual helper
64. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all The wallflower The “helper” The actual helper The last word
65. @tastapod The audience understood some of the behaviours they could expect The disruptor The know-all The wallflower The “helper” The actual helper The last word The surprise star
66. @tastapod Until finally… the audience could try Event Storming for fun and profit The audience learned about Event Storming a legacy application The audience learned about Event Storming a new application The audience picked up some useful advice The audience understood some of the behaviours they could expect The audience understood the basic mechanics of Event Storming W hat if people have questions? Once upon a time… Dan decided to explain Event Storming The audience learned about Event Storming a business process Alberto invites Dan to speak at DDDx 2016 Alberto Dan The audience W hat am I forgetting?
67. @tastapod Until finally… the audience could try Event Storming for fun and profit What if people have questions? What am I forgetting?
68. @tastapod Until finally… the audience could try Event Storming for fun and profit What if people have questions? What am I forgetting? Thank you!