🚀 DaC (Documentation as Code) Essentials for Software Documentation
🎯 Purpose
Documentation as Code (DaC) treats documentation like source code, enabling version control, automation, and collaborative development.
🌱 Origin
The DaC movement gained significant traction with the rise of Agile methodologies and DevOps practices in the 2010s, with various practitioners advocating for its adoption.
🧠 Essentials

🛠️ PlantUML – Focus Areas (Text-Based Diagrams)
- Important URLs
- PlantUml official website: plantuml.com
→ Defaultly opens the server renderer
→ Click on Home in the Sidebar to view documentation - PlantUml online editor: editor.plantuml.com
→ Web editor without installation
-
Versioning with Git
→ Store.plantumlfiles in repo for team collaboration. -
Tooling Integration
→ Use VS Code extension for PlantUML -
@startuml / @enduml structure
→ Every diagram starts and ends with these. -
Basic Diagrams:
→ Class diagrams, Sequence diagrams, Component diagrams, Deployment diagrams -
Include files / modular reuse
→!include common_styles.iuml -
Use Lib for efficient drawing
→ C4-PlantUML Lib
🎨 draw.io – Focus Areas (Drag-and-Drop Visual Diagrams)
- Important URLs
- Draw.io official website: app.diagrams.net
→ Defaultly opens the web editor
-
Versioning with Git
→ Store.drawiofiles in repo for team collaboration. -
Tooling Integration
→ Use VS Code extension for Draw.io -
Use Templates Efficiently
→ System, Network, UML, ERD templates cover most needs. -
Grid Layout & Layers
→ Align elements; group layers for complex diagrams. -
Export Options
→ PNG, SVG, PDF with embedded XML for future edits.
✅ PlantUml vs. Draw.io, Which to Use When
| Use Case | Tool |
|---|---|
| Code versioning & text editing | PlantUML |
| Auto-generated diagrams (from code) | PlantUML |
| Quick visual layout/mockup | draw.io |
| Interactive team brainstorming | draw.io |