Write code. Generate architecture diagrams.
The diagrams-as-code tool for system design and cloud architecture. Generate C4 model, AWS, Google Cloud, and Azure diagrams from simple text — in real time, right in your browser.
Trusted by engineering teams everywhere
Architecture diagrams that live with your code
Stop arranging AWS icons in Lucidchart every time your infrastructure changes. Describe your architecture in code, generate the diagram automatically, and keep it in sync with your system — in Git, in your PRs, always up to date.
Generate cloud architecture diagrams from code
Define your services, databases, and cloud resources in simple text. DiagramFlow generates a professional architecture diagram with the correct AWS, Google Cloud, or Azure icons — rendered in real time as you type.
- AWS, Google Cloud, and Azure icon libraries
- Real-time rendering as you type
- Version control friendly — diffs, PRs, Git
First-class C4 model support for structured architecture docs
Generate Context, Container, Component, and Code level diagrams from text. Use ready-made templates for system design, then share with a link or export to PNG, SVG, or PDF for your design reviews and ADRs.
- C4 model templates for all four levels
- Shareable links and PNG/SVG/PDF export
- System design templates for common architectures
Start from a template
Choose a flowcharts, C4, or cloud architecture template. Open it in the playground and edit the code — no setup.
Loading templates…
What teams are saying
Solutions architects and engineering teams use DiagramFlow to design cloud infrastructure, document system architecture, and keep it all in sync.
We used to spend two hours arranging AWS icons in Lucidchart before every architecture review. Now our engineers write a few lines of code and DiagramFlow generates the diagram. Reviews start on time.
Alex Chen
Solutions Architect at ScaleGrid
Our C4 diagrams live in the same repo as our Terraform. When we change the infrastructure, the architecture diagram updates in the same PR. No more stale docs from six months ago.
Priya Sharma
Platform Engineer at Replit
New hires used to take weeks to understand how our AWS services connect. I built a C4 Context diagram in DiagramFlow, shared the link, and onboarding time dropped by half.
Marcus Rivera
CTO at Launchpad
I needed a Google Cloud architecture diagram for an RFC and had it done in 10 minutes. The cloud icon library is accurate and the auto-layout means I never touch a single arrow.
Sophie Kim
Senior Engineer at Datadog
We went from zero architecture documentation to full system design diagrams for every service in a single sprint. The C4 model templates gave us a structure nobody argued with.
Daniel Okonkwo
Engineering Manager at Vercel
I teach a system design course and DiagramFlow is now required for all submissions. Students describe their AWS or GCP architecture in code, share a link, and I review it without installing anything.
Dr. Laura Voss
CS Professor at MIT
Your first architecture diagram is one click away
Open the playground, pick a C4 or cloud architecture template, and generate your diagram in real time. No signup required.