The new Trace Explorer in Sentry's platform allows developers to easily get metrics, groups and alerts from their spans. This feature is designed for developers and provides a user-friendly interface to analyze tracing data. Span-based metrics can be created using custom attributes, allowing users to track specific performance issues or anomalies. The tool also supports queryable custom attributes, enabling users to measure relevant application data. Additionally, the Trace Explorer offers an actionable trace explorer view, which allows users to quickly filter and group trace data across their entire stack. This feature is available to all self-serve customers who are opted into the Early Adopters program, and can be enabled within the Sentry settings. The new features in Trace Explorer are designed to help developers quickly spin up advanced performance monitoring, alerting, and dashboarding for their systems, with the least amount of cost and configuration.