With Sentry's new Query Engine, tracing data can be transformed into actionable insights to address complex performance and reliability issues. The new Trace Explorer and Span Metrics feature allows users to query their raw data to spot outliers, identify patterns, create alerts, and root cause problems. Users can filter and group spans by various attributes, such as operation, service name, or custom attributes, to gain a deeper understanding of their application's performance. This enables proactive use of tracing, reducing the need for manual debugging and optimizing performance. With this new feature, users can visualize broad-stroke trends and spikes in metrics, create dashboards and alerts, and even attach custom attributes to spans to unlock more insights.