I’m a cloud security architect. Earlier this year I posted CloudNetDraw, a tool that automatically generates Azure network diagrams (hubs, spokes, peerings, subnets, NSGs, UDRs, etc).

It connects to your Azure tenant (via user login or service principal), queries the environment, and exports editable .drawio files for both HLD and MLD views.

Since that first post, I’ve added:

• Hosted SaaS version: generate diagrams directly from the browser, no setup needed • Self-hosting: still fully open source for those who prefer running it locally • Deeper topology details: subnet-level resources and NSG/UDR mapping • Support for Multi-Hub environments, direct resource-linking and spoke-to-spoke peerings • Cleaner layout and faster Azure queries

Privacy-wise, nothing from your environment is stored! Diagrams are generated in memory and deleted after download.

Try it: https://www.cloudnetdraw.com Source: https://github.com/krhatland/cloudnetdraw

I’d love to hear what you think, especially feedback from anyone managing large Azure environments or working with network documentation automation.