---
title: "EventStorming: Introduce new colours iteratively"
source: "https://virtualddd.com/heuristics/eventstorming-introduce-new-colours-iteratively/"
authors: ["Alberto brandolini"]
tags: ["eventstorming", "sociotechnical systems", "collaborative modelling", "collaborative software design"]
type: "guiding heuristics"
question: "How do we introduce new colours during an EventStorming?"
submitter: "Kenny Schwegler"
---

# EventStorming: Introduce new colours iteratively

During an EventStorming session the group starts with a chaotic exploration of all the Domain Events. The next step is enforcing the timeline and create a consistent timeline. At this point new concept can pop up, like policies, actions, information, business rule (yellow). We can mark them as a hotspot, but we can also introduce the colours iteratively to the group.

![](./_assets/eventstorming-introduce-new-colours-iteratively-body-1.jpg)

## Examples

1. When there is a discussion popping up about two domain events as outcomes from the same action, you need a business rule (yellow) in between.

2. When as an outcome from a domain event the domein expert explicitly uses a domain concept. For instance when a payment is accepted we need to start process X.

3. If people are discussing about the information needed in order to make a decision we might add information.

## Context

Use it during a process or design level EventStorming, when we need to be more explicit.