Distributed tracing is a technique used to track requests as they traverse the distributed components of an application, helping QA teams identify failures, performance issues, and areas for optimization. It provides end-to-end visibility into application performance, enabling developers and operations teams to pinpoint issues, analyze user experience, and make data-driven decisions. By incorporating tracing into their development cycle, QA teams can verify that data and workflows behave as designed, detect unintended dependencies, and identify root causes of issues quickly and efficiently. Distributed tracing also helps ensure sensitive information is kept private and provides a framework for measuring and visualizing tracing to derive value from it. Its application extends beyond microservices to other software components, enabling developers and QA teams to debug faster and more effectively with distributed tracing applied to real devices and browsers.