The recipe is simple: put the key people in the same room, and have them model an entire line of business with events along a timeline. A bit of facilitation magic will allow your Big Picture EventStorming to discover gaps and challenge assumptions, enabling deeper collective learning about your domain.
But clarity and confidence are only the first steps. On a smaller scale, EventStorming can turn into a powerful process and software modeling tool; merging the contributions of business, service design, and software people into one coherent model, perfectly suited for modern event-driven architectures.
