methodatlas
Knowledge Modeling

Event Modeling

Turns terms, relationships, and rules into a tangible result by selecting a scenario, sketching events, and deriving implementation slices.

Core question
Which events, commands, and read models cover the chosen user flow end-to-end, and how can we slice implementation from this?
MediumWorkshop + async2-6 h
Open runsheetPlan sessionStart comparison
Purpose

The method helps clarify terms, relationships, and rules in a concrete way. It turns knowledge into terms, relationships, rules, or queries. The result is captured as an event model, UI flow, and commands.

How it works

The team follows the steps: select a scenario, sketch events, add commands and triggers, model views and state changes, and derive implementation slices. Each step is captured visibly. At the end, an event model, UI flow, and commands are available so decisions, tests, or actions can follow directly.

Visual orientation

Method sketch for a quick mental model.

Event Modeling · System BlueprintConnect user intent, commands, events, read models, and views into implementable slices
Event ModelingThe visual shows a system blueprint with user intent, commands, events, read models, views, and vertical implementation slices.Model system behavior as an end-to-end blueprintVertical slices connect intent, command, event, read model, and view into an implementable flow.Slice 1Slice 2Slice 3Slice 4User IntentCapture requestChoose optionStart serviceSee statusCommandCreate RequestSelect PlanActivate ServiceCheck StatusEventRequest CreatedPlan SelectedService ActivatedStatus CheckedRead ModelRequest ListPlan SummaryService StateStatus LogView / APIFormDecision UIActivation APIDashboardnext eventconsequencefeedback

Flow

  1. 1Select a scenario
  2. 2Sketch events
  3. 3Add commands and triggers
  4. 4Model views and state changes
  5. 5Derive implementation slices

The runsheet guides execution with 5 phases, timeboxes, 5 pitfalls, and clear stop criteria.

Open runsheet

Ideal for

  • Event-driven systems
  • Vertical slicing
  • Behavior-first design

Not good for

  • Pure infrastructure design
  • Simple CRUD apps

Deep dive

In detail

Event Modeling follows a clear working logic: selecting a scenario, sketching events, adding commands and triggers, modeling views and state changes, and deriving implementation slices. This turns the method into a visible thinking process rather than only a conversation. Participants move step by step from raw material, observations, or options toward a shared structure. As a result, an event model, UI flow, and commands become available for decisions, learning, or further planning.

Facilitation

Prepare a clear guiding question, the right information, and a visible workspace. Plan about 2-6 h with 2-8 people and use the format either in a workshop or asynchronously. The facilitation needs notable structure and preparation; short timeboxes, visible intermediate results, and a parking lot for open questions help.

Output artifacts
Event ModelUI FlowCommandsRead Models
Tags
eventsblueprintDDDbehavior

Sources

Event Modeling - Designing Modern Information Systemseventmodeling.org
Artifact templates
Event Modeling Working TemplateCompact working template for Event Modeling with context, input, output artifacts, and next step.
markdown

event-modeling-working-template.md

Compact working template for Event Modeling with context, input, output artifacts, and next step.

Event Modeling Working Template

Goal

Models system behavior through Events, Commands, Views, and Policies along a scenario.

Context

When and for what do we use this method?

Input

Which data, observations, decisions, or materials are available?

Execution

Short notes along the runsheet.

Output artifacts

  • Event Model:
  • UI Flow:
  • Commands:
  • Read Models:

Assumptions and open questions

  • ...

Decision / Next step

Owner, date, and success signal.

When to choose differently

Short decision aid for existing alternatives.

User Story Mapping

Statt Event Modeling, wenn du Abläufe entlang von Nutzerzielen und Liefer-Schnitten strukturieren willst.

Similar methods

All methods
Knowledge Modeling
Domain Storytelling

Turns terms, relationships, and rules into a tangible result by choosing a concrete story, identifying actors and work objects, and extracting language and rules.

Domain Modeling
EventStorming

Turns domain knowledge, language, and system boundaries into a tangible result by selecting a business flow, collecting domain events chronologically, and deriving models and follow-up questions.

Knowledge Modeling
Competency Questions

Concrete domain questions define what an ontology or knowledge model must be able to answer and test.

Knowledge Modeling
Property Graph Schema Design

Query patterns drive node labels, relationships, and constraints so property graphs match real retrieval needs.

Domain Modeling
Bounded Context Canvas

Turns domain knowledge, language, and system boundaries into a tangible result by naming the context, formulating its purpose, and noting ownership and risks.

Knowledge Modeling
Concept Mapping

Clarifies concepts, relationships, and rules by framing the focus question, gathering concepts, and checking gaps and contradictions.