BI · Free template
C4 container diagram template — free online editor
Containers inside system boundary. Edit in your browser, export PNG/SVG/PDF, and share a view link.
Common use cases
- Diagram web app, API, database, and workers
- Document deployable units inside the system
- Align dev team on container boundaries
C4Containers
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From diagram to shipped software
Many clients start with a diagram in NorthIRdev, approve the architecture in the client portal, then hire us to build the production app — portals, payments, automation, and AI where it helps.