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This skill facilitates the integration of Real User Monitoring (RUM) into web applications, allowing developers to capture authentic performance data from actual users. It provides guidance on selecting appropriate monitoring platforms, designing instrumentation strategies for Core Web Vitals like LCP and CLS, and generating production-ready JavaScript tracking code. By automating the setup of performance observability, it helps teams identify bottlenecks and improve the end-user experience based on real-world metrics rather than synthetic tests.