It started from frustration; it turned into a little experiment that sparked a community of explorers. It branched into different formats, becoming an incredibly versatile tool, allowing us to envision new businesses and to design resilient and well-decoupled software. Then, it survived a pandemic and became one of the few good reasons to return to the office. Ten years from the original idea, EventStorming still delivers surprises and insights.

Lessons learned from modelling in a CQRS/ES environment. From the evergreen heuristics for aggregate boundaries to layered state machines and cross-bounded contexts visualization.