Microservices improve scalability but make debugging hard. This article shows how distributed tracing injects and propagates trace IDs so each service adds spans that a backend stitches into end-to-end views, speeding root-cause analysis and cutting MTTD/MTTR. With tools like OpenTracing, Jaeger, and New Relic, teams can spot bottlenecks (e.g., ShopEasy's order-payment-inventory-shipping flow) and boost reliability and performance.