Implementation of Multi-Region Chaos Engineering with AWS Fault Injection Simulator (FIS)

Today services are expected to be available 24/7 across global markets, designing for failure is no longer an advanced concept—it’s a fundamental principle. As infrastructure becomes more distributed across AWS regions, the surface area for potential failure increases. Regional service interruptions, latency between endpoints, or misconfigured failovers can all severely impact end-user experience. This is where chaos engineering—the practice of deliberately injecting faults to uncover systemic weaknesses—becomes critical.