Event Modeling is a visual and collaborative approach to modeling complex systems and business domains using events as the primary building blocks. Events are represented as boxes on a timeline, and they describe changes in the system or business domain that have significance to the stakeholders.

In Event Modeling, events are classified into three types: facts, decisions, and actions. Facts are events that have already happened and are immutable. Decisions are events that trigger a decision-making process, and actions are events that represent the execution of a decision.

Event Modeling involves a workshop-style approach where stakeholders, including domain experts, developers, and other team members, collaborate to identify and model events that are relevant to the system or business domain. The resulting event model provides a shared understanding of the domain, identifies areas of complexity and uncertainty, and can serve as a foundation for further development activities such as user story mapping, system design, and implementation.

Event Modeling is particularly useful for modeling complex and event-driven systems, such as those found in financial services, healthcare, and logistics. It can help teams identify and address potential problems early in the development process, leading to more robust and resilient systems. You can find out more about event modeling at https://eventmodeling.org/posts/what-is-event-modeling/