Martin Dilger at Craft Conference, Budapest

Martin Dilger, the author of the book " Understanding Event Sourcing, will present at CraftCon in Budapest

From Idea to Event Model to Code - and Back
A Structured Approach to Building Scalable Systems with Event Modeling, Event Sourcing, and Agentic Coding

What if your requirements were something you could run?

Most teams play an expensive telephone game: ideas become written specs, specs become tickets, tickets become code — and somewhere along the way, the original intent gets lost. The result is systems that surprise their builders and disappoint their users.

In this talk, we show a different path.

By combining Event Modeling and Event Sourcing, teams can build a shared, visual understanding of a system before a single line of production code is written. The model captures behavior, decisions, and data flow in a way that everyone - engineers and business stakeholders alike - can read, challenge, and refine.

But the model doesn't stop at documentation. It becomes a living specification: the single source of truth that drives code generation and acts as the foundation for agentic coding. When the model changes, the system changes with it - not the other way around.

The result is a development loop where:

• Models don't rot — they're actively worked on, not archived

• The model is the source of truth - understood by business, engineering and management

• Changes are welcome - they extend systems rather than breaking them

We'll close with a live demonstration of the full loop: from idea to visual model, from model to generated code, and back again - showing how teams can move faster, with more clarity, and far less guesswork.