Practical Guide: Building a Cell-Based Architecture on Azure with Terraform and Python

1. Introduction As cloud applications scale to serve global audiences, relying on a single centralized infrastructure stack introduces critical vulnerabilities. A localized failure or a noisy neighbor can trigger a systemic outage. Cell-Based Architecture mitigates this by partitioning the system into isolated, identical, and self-contained units called "cells." By routing specific tenants or users to dedicated cells, you constrain the blast radius of any degradation strictly to that cell, prese