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Introducing EventStorming

An act of Deliberate Collective Learning

Alberto Brandolini

The deepest tutorial and explanation about EventStorming, straight from the inventor.

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About

About

About the Book

At first look, EventStorming is deceptively simple: just have a long paper roll available, and a virtually unlimited stock of coloured sticky notes and start modelling problems that looked too big to be modelled. But the ability to visually master large-scale complexity opens the way to many interesting outcomes.

- Better business processes: once you see the process, impediments and correlations are vividly displayed. You can't avoid tackling them.

- Better software architectures: see the areas where stakeholders' needs are in conflict, and resolve conflicts by leveraging bounded contexts.

- Better learning: an exploration of a complex domain is now question-driven and with a visible collective sketch. Your team will never be so wise.

- Better interactions: trigger the right conversation between the right people.

In this book, you'll find guidance about how to leverage the potential of EventStorming.

Disclaimer: work still in progress

The book is still in progress, after all these years. Many things have changed since the beginning: it works, and it's been already adopted by many organizations around the world. Unfortunately, the demand for consulting in this area spiked and left me little time for writing in a comfortable seat. The pandemic then forced me to re-think what EventStorming in a new normal looked like.

There are still holes and FIXMEs, and I am now fixing them one by one. I killed the Trello board that I used to share progress. It just didn't work for that goal.

Resources

If you're looking for a short official description of EventStorming, you may want to check our official page on Avanscoperta.it.

Extra resources can be found on the official website.

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Author

About the Author

Alberto Brandolini

I am helping teams and companies to develop brilliant solutions to complex problems. Sometimes this involves writing software. Sometimes this involves working with people. I like both ways, especially when it leads me into unexplored territories.

I've been coding since 1982, experimenting since ...forever? This led me into Agile, Domain-Driven Design, Lean, Complexity, Management 3.0 and everything needed in order to solve the problem.

I am a father, a husband, an entrepreneur, a consultant, a developer, a teacher, a public speaker, a cook, a drummer... now it's time to be a writer.

A glimpse of what I am into can be found on my blog, and I've been speaking in quite a few places lately. My presentation track is available here.

I run avanscoperta, one of the coolest places on earth to teach, learn and experiment. 

Leanpub Podcast

Episode 156

An Interview with Alberto Brandolini

Contents

Table of Contents

Preface - 60%

  1. Who is this book for
  2. Notation
  3. Acknowledgments
  4. How to read this book

1.What does EventStorming look like? - 85%

  1. Challenging corporate processes
  2. Kicking off a startup
  3. Designing a new feature for a web app
  4. Quick EventStorming in Avanscoperta5
  5. IA deep dive into problem space

2.A closer look at the problem space

  1. Silos
  2. Targets and goals
  3. Decisions’ lifecycle
  4. The cost of agreeing
  5. Putting everything together

3.Pretending to solve the problem writing software - 50%

  1. It’s not about ‘delivering software’
  2. The illusion of the underlying model
  3. The Product Owner fallacy
  4. The backlog fallacy [FIXME: definitely not the first one]
  5. The backlog fallacy (rewritten)
  6. Modeling is broken
  7. Requirements gathering is broken
  8. Enterprise Architecture is broken
  9. The EventStorming approach

4.Running a Big Picture Workshop - 98%

  1. Invite the right people
  2. Room setup
  3. Workshop Structure
  4. Phase: Kick-off
  5. Phase: Chaotic Exploration
  6. Phase: Enforcing the timeline
  7. People and Systems
  8. Phase: Problems and opportunities
  9. Phase: Pick your problem
  10. The promised structure summary
  11. Chapter Goals:

5.Playing with value - part 1 - 95%

  1. Explore Value
  2. Explore Purpose
  3. When should we apply this step?
  4. Chapter Goals:

6.Discovering Bounded Contexts with EventStorming44

  1. Why Bounded Contexts are so critical
  2. Finding bounded contexts
  3. Enter EventStorming
  4. Structure of a Big Picture workshop
  5. Homework time
  6. Putting everything together

7.Making it happen

  1. Managing Participant’s experience
  2. Managing conflicts
  3. Chapter Goals:

8.Preparing the workshop - 30%

  1. Choosing a suitable room
  2. Provide an unlimited modeling surface
  3. Managing invitations

9.Workshop Aftermath - 20%

  1. Cooperating domains
  2. When to stop?
  3. How do we know we did a good job?
  4. Wrapping up a big picture workshop
  5. Managing the big picture artifact
  6. Focusing on the hot spot
  7. Documenting the outcomes - TRICKY
  8. Emerging structure

10.Big Picture Variations - 50%

  1. Software Project Discovery
  2. Organization Retrospective
  3. Induction for new hires

11.Big Picture in remote mode - 80%

  1. Main changes
  2. What role for a Big Picture?
  3. Patterns For Remote Big Picture
  4. Do we have a recipe?
  5. IIWhy is it working?

12.What software development really is - 40%

  1. Software development is writing code
  2. Software development is learning
  3. Software development is making decisions
  4. Software development is waiting
  5. IIIModelling processes and services

13.Process Modeling as a cooperative game - 100%

  1. Context
  2. Game Goal(s)
  3. Coming soon
  4. Chapter Goals:

14.Process Modeling Building Blocks - 90%

  1. Fuzziness vs. precision
  2. The Picture That Explains Everything
  3. Events
  4. Commands, Actions or Intentions
  5. People
  6. Systems
  7. Policies
  8. Read Models
  9. Value
  10. Hotspots
  11. Chapter Goals:

15.Process modeling game strategies - 50%

  1. Kicking-off
  2. Mid-game strategies
  3. Team dynamics
  4. Are we done?
  5. Chapter Goals:

16.Observing global state - 10%

  1. The transaction obsession
  2. There’s more to consistency than it’s apparent to the eye
  3. IVModeling software systems

17.Running a Design-Level EventStorming - 10%

  1. Scope is different
  2. People are different
  3. What do we do with the Big Picture Artifact?
  4. Where are Events Coming from?
  5. Discover Aggregates
  6. How do we know we’re over?

18.Design-Level modeling tips

  1. Make the alternatives visible
  2. Choose later
  3. Pick a Problem
  4. Rewrite, then rewrite, then rewrite again.
  5. Hide unnecessary complexity
  6. Postpone aggregate naming

19.Building Blocks - 20%

  1. Why are Domain Events so special?
  2. Events are precise
  3. No implicit scope limitation
  4. Domain Events as state transitions
  5. Domain Events are triggers for consequences
  6. Domain Events are leading us towards the bottleneck
  7. Alternative approaches
  8. Wrapping everything up
  9. Commands - Actions - Decisions
  10. Chapter Goals:

20.Modeling Aggregates

  1. Discovering aggregates

21.Event Design Patterns - 5%

  1. Discovery strategies
  2. Composite Domain Event

22.From paper roll to working code

  1. Managing the design level EventStorming artifact
  2. Coding ASAP

23.From EventStorming to UserStories - 5%

  1. A placeholder and a better conversation
  2. Defining the acceptance criteria
  3. EventStorming and User Story Mapping
  4. How to combine the two approaches?

24.Working with Startups - 2%

  1. The focus is not on the app
  2. Leverage Wisdom of the crowd
  3. Multiple business models

25.Working in corporate environment - 5%

  1. Invitation is crucial
  2. Manage check-in process
  3. The fog-me-fog model
  4. Nobody wants to look stupid
  5. Wrapping up
  6. What happens next?
  7. Corporate Dysfuctions

26.Designing a product

  1. This is not a tailored solution
  2. Matching expectations
  3. Simplicity on the outside

27.Model Storming - 0%

  1. Chapter Goals:

28.Remote Event Storming

  1. Ok, seriously
  2. Downgrading expectations
  3. VPatterns and Anti-patterns

29.Patterns and Anti-Patterns - 75%

  1. Add more space
  2. Be the worst85
  3. Conquer First, Divide Later
  4. Do First, Explain Later
  5. Fuzzy Definitions
  6. Guess First
  7. Hotspot
  8. Icebreaker (the)
  9. Incremental Notation
  10. Go personal
  11. Keep your mouth shut
  12. Leave Stuff Around
  13. Manage Energy
  14. Make some noise!
  15. Mark hot spots
  16. Money on the table
  17. One Man One Marker
  18. Poisonous Seats
  19. Reverse Narrative
  20. The Right To Be Wrong

30.Rush to the goal

  1. Blink Modelling at DDD Europe 2020
  2. Single Out the Alpha-male
  3. Slack day after
  4. Sound Stupid
  5. Speaking out loud
  6. Start from the center
  7. Start from the extremes
  8. Unlimited Modeling Surface
  9. Visible Legend

31.Anti-patterns

  1. Ask Questions First
  2. Big Table at the center of the room
  3. Committee
  4. Divide and Conquer
  5. Do the right thing
  6. Dungeon Master
  7. Follow the leader
  8. Human Bottleneck
  9. Karaoke Singer
  10. Precise Notation
  11. Religion War
  12. The Spoiler
  13. Start from the beginning
  14. The godfather

32.RED ZONE

  1. Fresh Catering
  2. Providential Toilet Door Malfunctioning
  3. VISpecific Formats

33.Big Picture EventStorming

  1. Ingredients:

34.Design-Level EventStorming

  1. Ingredients:
  2. Next actions

Glossary - 40% (but do you really care?)

  1. Writer’s note
  2. Fuzzy by design

Tools

  1. Modeling Surfaces
  2. Markers
  3. Stickies
  4. Static pads
  5. Recording results

Bibliography

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