AbstractModern distributed systems rarely fail in isolation — they degrade across multiple execution steps. This article presents a control-loop-based architecture for building self-healing systems that detect anomalies early, precisely isolate failures, and automatically recover using context-aware decisions. IntroductionModern distributed systems are large-scale platforms built on service-oriented architecture. In such systems, an individual request — the unit of execution — typically flows through multiple services, including clients (request initiators), orchestrators, enrichment layers, validation or policy-evaluation systems, routing layers, downstream dependencies, state management systems, reconciliation processes, and notification systems.