Backend tracing plays a crucial role in understanding the behavior of modern distributed systems by generating a comprehensive trace of a request's journey through services and components. Traditional Application Performance Monitoring (APM) tools often sample aggressively to manage costs, which can hinder effective debugging by missing critical traces. Session replay tools, though offering a targeted approach, may fail to provide the necessary backend context. Multiplayer addresses these challenges by capturing every backend trace associated with a session without sampling, ensuring complete data is available for precise debugging. By leveraging OpenTelemetry, Multiplayer preserves all spans in a trace, correlating backend data with frontend replay for enriched session analysis. This approach provides confidence that no crucial data is missed, enhances debugging precision, and offers AI-ready context for comprehensive analysis. Multiplayer's full-stack session recordings offer a seamless and detailed view of system interactions, overcoming the limitations of traditional tools and providing a more robust solution for observability and debugging.