EventStorming is a low-tech activity for a group of people to brainstorm and rapidly model a business process. In a sense, EventStorming is a tactical tool for sharing busi‐ ness domain knowledge.

An EventStorming session has a scope: the business process that the group is interes‐ ted in exploring. The participants are exploring the process as a series of domain events, represented by sticky notes, over a timeline. Step by step, the model is enhanced with additional concepts—actors, commands, external systems, and others—until all of its elements tell the story of how the business process works.