Multi-Cloud Resilience: The Event-Driven Cellular Architecture Blueprint across AWS and Azure

1. Introduction As enterprise systems reach massive scale, relying on a single cloud provider introduces systemic risk. Regional outages, vendor-specific API degradations, or severe misconfigurations can result in global downtime. Multi-cloud cellular architecture solves this by deploying isolated, self-contained failure domains (cells) across different cloud providers. In this tutorial, you will architect a unified, event-driven system where AWS and Azure serve as the physical hosts for identic