c4-draw.io VS C4-PlantUML

The C4 model has definitely convinced us and we will use it again — if it fits. In one of our projects, a colleague was able to familiarize himself with the architecture we had changed without much effort after taking parental leave. We like using the standardized and lightweight model to design architectures efficiently and to document them in a way that is understandable for all target groups. A big advantage is the integration of the C4 model with arc42, ArchiMate and other tools. We have used draw.io with an extension so far and have been satisfied with it.

C4-PlantUML: Export your model as C4-PlantUML diagrams.

PlantUML + C4 plugin;

Yes. I use this all the time for software diagramming. With c4 model (https://github.com/plantuml-stdlib/C4-PlantUML) and AWS icons (https://github.com/awslabs/aws-icons-for-plantuml)

The C4 model (https://c4model.com/) is great for architecture diagrams. You can use different tools to generate them. Here are the ones I've been using:

- https://github.com/plantuml-stdlib/C4-PlantUML

3️⃣ Text-based diagramming- C4-PlantUML

> onboarding docs

yes, they're don't changing frequently

> system design docs

yes - see C4-PlantUML[1]

> meeting notes

no, unless they're directly code related like ADRs [2,3].

Although one can abuse Github Issues + comments for this, in my opinion it's better to use modern SaaS tools for this, i.e. Loom, Descript, Linear.app, etc. - you can automate this process, e.g. transcribe the meeting's recording and add the issue/repo using Github Actions.

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[1] https://github.com/plantuml-stdlib/C4-PlantUML

[2] https://adr.github.io/

[3] https://docs.aws.amazon.com/prescriptive-guidance/latest/arc...

I use a combination of: * Markdown (for notes and code blocks) * Mermaid markdown (for architectural diagrams in markdown documents) * PlantUML markdown (again for arch. docs in markdown, but mainly for C4 diagrams) * a Docker container to render PlantUML markdown to images * Joplin, installed on every device I regularly use * NextCloud, to store, secure, encrypt, and make available everywhere, the markdown notes managed by Joplin