Real User Monitoring
In plain terms
Measuring actual users' experience in production.
Going deeper
Real User Monitoring (RUM) collects performance and behavior data from real users' sessions, revealing true experience. It captures what users actually feel.
Under the hood
Reflects real devices, networks, and geographies that synthetic tests can't fully replicate.
Examples
Page-load metrics, Core Web Vitals, frontend monitoring, user experience.
Think of it like...
Like surveying actual diners' experiences rather than sending a test inspector.