the sweet spot
DESCRIPTION
Put the key stakeholders in the same room with an unlimited modelling surface, and some tricks, and you'll end up not only with a viable model, but also with skeleton for continuous improvement.TRANSCRIPT
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The sweet spot
@ziobrandoavanscopertaAlberto Brandolini
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The startWhat’s the problem we’re
trying to solve?
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primordial soup
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Then dinosaurs
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The asteroid
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Organisational silos
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Why?
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Microscope view
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Microscope view
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Microscope view
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Microscope view
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Microscope view
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Microscope view
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Microscope view
new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hire
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Microscope view
new hire new hireDepartment boundary
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Requirements Gathering
Yep, that’s a common name for our problem
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How do we collect requirements?
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Sequential strategyTime...
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way too late…
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A simple solution
Put all the key stakeholders in the same room and
sketch a model together
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Event Storming!
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Not this way
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This is way better
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Sequential gatheringTime…
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EventStormingTime…
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Active Collaboration
All participant should actively contribute
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One Man
One Marker
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Chaotic eats sequential for
breakfast
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and with a few tricks…
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STOP Modelling NOW!!!
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We basically made the business problem
less boring
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It’s not about being faster
That’s still thinking linearly
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What’s Eventstorming
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What’s Eventstorming
It’s an act of
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What’s Eventstorming
It’s an act of
deliberate
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What’s Eventstorming
It’s an act of
deliberate
collective
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What’s Eventstorming
It’s an act of
deliberate
collective
learning
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We discover a lot
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Things we swept under the carpet
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The Big Picture
All the business process(es) end-to-end and beyond!
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Unlimited Modelling Space
My problem is...
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Unlimited Modelling Space
My problem is...
BIGGER
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Guerrilla modeling
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Once you see it…
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Conquer first Divide later
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Unlimited surface
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Unlimited surfaceYou don’t know the size of the
problem before exploring it
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Big Picture approaches-Impact Mapping -> Gojko Adzic
-Specification Workshop -> Gojko Adzic
-User Story Mapping -> Jeff Patton
-Value Stream Mapping -> Stephen Parry (and others, of course)
-...
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In EventStorming
-All key stakeholders in the same room
-With an unlimited modelling surface
-Modelling key processes starting from Domain Events
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Domain EventsSometimes I do things for a reason
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along a timeline
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Capture spontaneous complexity
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Can’t you do the same with an activity
diagram?
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Of course!
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too afraid of the conference code of conduct to tell the joke
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too afraid of the conference code of conduct to tell the joke
Could you please laugh anyway?
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instead…
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Humans evolved as the most efficient
creatures to spot someone
else’s mistakes
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Let’s use that!
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Business conversation
Technical conversation
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Observe
Language Interaction
Body Language
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We have a big a behavioural model of the whole thing, now
what?
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Business conversation
Domain-‐Driven Design Event Sourcing
CQRS Event Driven Architecture
a business-‐driven model evolution
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Adding some DDD spices
I lied: we do a little more than just putting everybody in the same room
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Myth N°1: Ubiquitous Language
Everybody should speak the same language
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Age of aquarius!!!
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While…
SalesDelivery
Operations
Finance
HR
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That looks like
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…that looks like…
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Or worse!
SalesDelivery
Operations
Finance
HR
IT
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Trying to reach an agreement is waste
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Mapping disagreement is way
more interesting
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Myth N°2: Domain Expert
Domain Expert knows it all
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Domain Expert?
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…but they won’t admit it easily
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Modelling Sympathy
Don’t know what it means but sounds so cool
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Simple as that
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Aggregates
Workshop
Participant added
Participant removed
Add participant
Remove participant
Maximum Capacity reached
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CommandsAdd Item to cart
Customer
Article Details
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UI Constraints
Item pageProjection(read model)
Command
UserPrice
Special offer!
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Processes
Ticket bought
Welcome process
Send welcome e-mail
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External Systems
Thermometer Temperature registered
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External Systems
Command External System
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Design Level
Active collaboration Wisdom of the crowd
Visually consistent models Big $ visible
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I mean it!
If you don’t I am gonna
find where you live!
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Business conversationValue Stream / Value creation
Interest areas Conflict areas
Bottleneck Accidental complexity
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Bottleneck $ Pain Points
Do we really need to measure it?
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Backlog
Do we really need that?
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Value Creation Network
Finally visible (dysfunctions included)
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Pain-Oriented EventStorming
Focus on
Explore normally foggy areas
Let an action plan emerge!
Pain Point
Someone else’s pain point
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Pain Oriented
Show the whole flow Display the pain Explore Choose
Event
Pain Point
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Danger Zone
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best advice comes from
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best advice comes from
KEEP YOUR
MOUTH SHUT
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but please…
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Impact Mapping
What is the expected outcome?
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Backward implementation
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POES as retrospective background
Big Picture first Retrospective scope explicitly
widened Facilitated root cause analysis
Hints for collaboration
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As a learning toolEvery new hire in avanscoperta gets an EventStorming session
The result is visible on the wall …
I am here! :-)
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Maximise Learning?
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EventStorming as a Learning Tool
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EventStorming as an experiment planner
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Many others are pointing here…
-Lean Startup
-Lean UX
-Popcorn Flow
-Small Controlled Experiments
-Modellathlon
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http://www.noop.nl/wp-content/uploads/2014/07/celebration-zone-color.png
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Business experiments
Implementation experiments
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Wrapping up
Better Learning Better Connections
Better Models Playground for experiments
Architectural Change Organisational Change
… Model Storming?
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References
http://ziobrando.blogspot.com #eventstormers su Google+:
https://plus.google.com/u/0/
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avanscoperta
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Thanks@ziobrando
avanscoperta