Jaeger tracing is an open-source system that monitors and troubleshoots distributed systems based on microservices. Utilizing the OpenTracing API, it helps trace the flow and performance of system requests. This is achieved by integrating the Jaeger client library in the application, creating traces, and configuring the Jaeger agent for data collection. Visualizing traces allows for performance insight, capacity planning, and ensures compliance. An e-commerce case study emphasizes the value of traceability for issue identification and system optimization. Deployment procedures on Kubernetes are provided.