Distributed tracing is an essential tool in modern software systems, particularly in environments characterized by distributed architectures, microservices, and containerization. It allows developers, SRE teams, and DevOps engineers to track a request through various system calls, providing a complete overview of the request's journey. This capability is invaluable for debugging, identifying performance bottlenecks, and optimizing system design. A trace consists of multiple interconnected spans, representing operations performed due to an initiating request, and is crucial for understanding complex interactions in distributed systems. Tools like OpenTelemetry standardize tracing data, ensuring flexibility and avoiding vendor lock-in. While distributed tracing can generate significant data, sampling methods like head-based and tail-based sampling can mitigate performance impacts. When integrated with logs and metrics, distributed tracing enhances observability, enabling faster issue resolution and facilitating innovation by reducing deployment risks.