Before we begin . . .
Go to the "voting" table we've setup at the back.
Vote on whether you've tried to introduce DDD to your company and rate how successful it's been.
Introducing DDD to your Company
@ie_ddd
@barryosull
@daraghoshea
https://www.dddireland.org
https://www.barryosull.com
https://www.daraghoshea.com
Sponsored by:
Introducing DDD to your company.
The Meetup:
- Why introduce DDD?
- How to introduce it
- Dos and Donts
- Three Techniques
- Group Discussion
- Networking
Meetup Structure
Why introduce DDD?
Let's discuss why you want to introduce it.
What value will it bring and why?
(10 mins)
Consistent language between dev & business
Better Software
Strategic alignment
Architecture that helps build solutions
How to introduce it?
Dos:
- Focus on the problems stemming from not using DDD
- Demonstrate that DDD can fix these problems
- Use the businesses language
- Empathise
Donts:
- Focus on the name and its technical aspects
- Hype them up about how technically cool it is
- Evangelicise about it out of the blue
You're selling the concept.
So sell it!
Don't Just Talk
Demonstrate Value
Three known techniques
1. Event Storming
Go into a room and event storm a new feature with the product owner and/or domain experts.
1. Event Storming Tips
- Focus on events and constraints
- Ask what things are called, be curious and listen
- Don't use technical language
- Don't hype up the event storming concepts, just do it!
- Iterate on the solution space
- Let business owners critique and break models
- Make business owners aware of complexity/cost
2. Talk with the domain experts
2. Talk with the domain experts tips
- Use their language in conversations, not yours
- When a feature request is missing concepts, don't make up language among yourselves, reach out and ask them
- Rename code concepts to match their language
- Get them in a room, draw your understanding on a whiteboard, get them to confirm/deny
- The PM/PO may not be the domain expert
3. Separate Domain Code from Infra Code
3. Separate Domain Code from Infra Code Tips
- Reduces noise, allows you to begin to see the domain
- Ask business owners what things are called
- Allows you to write tests for domain constraints
- Allows you to test infra independently
- Can be done piece by piece
- Requires buy in from developers/architects
Discussion
How could you introduce DDD to your company?
- Break into teams of 4
- Discuss various ways to do introduce DDD
- After 20mins, present your ideas to the group
Next meetup
Lightning Talks: Real world DDD Experiences
Modelling Constraints: Defining our systems
or
Which do you prefer?
Introducing DDD to your Company
By Barry O' Sullivan
Introducing DDD to your Company
DDD is about enabling developers and business owners to work together on a collaborative model, but how do you introduce the concept? In a world rife with acronyms, people can be hesitant to try out new ideas, especially one's that involve changing the status quo. In this meetup we'll discuss various techniques and ideas for introducing DDD to an organisation. Participants will be encouraged to discuss their experiences and the issues they've faced. DDD practitioners will be there to facilitate and offer advice. Afterwards you'll be better able to demonstrate the value of DDD to stakeholders, without scaring them off with a load of new jargon.
