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field-notes P2-aws-network-visualizer.md

P2 · Personal projects

A service that answers "can these two talk?" in two clicks

An AWS network visualization and reachability service born from daily work (in progress)

  • AWS
  • Visualization
  • SaaS
  • BYOC
  • CloudFormation
  • AI

Summary

I am turning the manual work of tracing AWS traffic paths in the console into a service where you pick two resources on a diagram and get an answer.
Security group inbound not allowed
Another pair is selected. The light reaches the end and a green check appears.

Background

Each traffic request at work meant following security groups, routes, and firewalls by hand in the console. I had automated part of that with internal Python tools, and this service brings that experience to a screen. It is still in development.

Judgment

After more than two months of development with Codex, I decided to start over with Claude Code, keeping only the product knowledge and design assets.

I judged that rebuilding on what I had learned about the product would be better for quality and speed than fixing the existing implementation.

What I did

Goals

  • Show complex, connected AWS resources as a diagram
  • Determine whether two selected resources can communicate, and which security policy allows or blocks it
  • Final scope: connection and lookup across multiple AWS accounts and all regions within an organization or registered by customers, reachability checks, and a history of changes

Structure

  • BYOC (Bring Your Own Cloud, installed in the customer’s environment): the customer runs a provided CloudFormation template (a blueprint that creates AWS resources) in their own AWS account, and the required permissions, resources, and services are set up automatically.
  • After setup, the first-run screen creates administrator and regular user accounts, and registers the AWS accounts to collect from.
  • An AI model is planned as an analysis aid, and the goal is to offer this as SaaS.
Customer AWSaccountService set upautomaticallyRegister accountsCollect resourcesacross accounts andregionsDiagramSelect tworesourcesReachability and thepolicy behind itRun CloudFormation
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