Google’s core web vitals & W3C trace context

The text discusses improvements made to the New Relic Browser agent and Real User Monitoring (RUM) capabilities, including standardization of W3C Trace Context, which enables cross-vendor interoperation of traces and helps ensure that troubleshooting services instrumented with agents from other vendors can be completed without risks. This improvement also allows for the reliable traversal of third-party components. The addition of Cumulative Layout Shift (CLS) measures webpage stability by tracking unexpected layout shifts caused by asynchronous resource loading or DOM element resizing, providing a user-centric metric for visual stability.