Dynamic Diagram — C4 Model

Dynamic Diagram

A dynamic diagram can be useful when you want to show how elements in the static model collaborate at runtime to implement a user story, use case, feature, etc. This dynamic diagram is based upon a UML communication diagram (previously known as a «UML collaboration diagram»). It is similar to a UML sequence diagram although it allows a free-form arrangement of diagram elements with numbered interactions to indicate ordering.

Example (Collaboration Style)

Diagram Key

Example (Sequence Style)

Scope

A particular feature, story, use case, etc.

Primary and Supporting Elements

Your choice — you can show software systems, containers, or components interacting at runtime.

Intended Audience

Technical and non-technical people, inside and outside the software development team.

Recommended?

No, dynamic diagrams should be used sparingly to show interesting/recurring patterns or features that require a complicated set of interactions.

Notes

The collaboration and sequence styles show the same information in a different way, so feel free to use whichever you prefer.

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