Glossary · Measurement and evidence
RUM
Real user monitoring: performance measured in visitors' own browsers and reported back, giving field data for pages and sites the public datasets never cover.
What RUM means
Real user monitoring: performance measured in visitors' own browsers and reported back, giving field data for pages and sites the public datasets never cover. A small site gets no Chrome UX Report entry at all, so a first-party beacon is the only route to the metrics that rankings actually read.
Terms this definition uses
Related terms in Measurement and evidence
The vocabulary for saying how strongly something is known.
evidence level · false positive · denominator note · percentile rank · population baseline · cohort asymmetry · self-audit invariant · unscored measurement · dated series · change receipt · regression · finding age · graded through a wall · self-audit · placeholder in record · fetcher disagreement · own-host loop · score version · row review · double-counted defect · cosmetic row · gated row · log file analysis · AI referral attribution · finding fingerprint · finding state · headroom · fix list · render gap · lab data · Lighthouse · LCP · CLS · INP · topicality · intent coverage · canary · citation rate · presence rate · answer stability
Questions about RUM
What is RUM?
Real user monitoring: performance measured in visitors' own browsers and reported back, giving field data for pages and sites the public datasets never cover.
What does RUM not show or guarantee?
Real user monitoring: performance measured in visitors' own browsers and reported back, giving field data for pages and sites the public datasets never cover. A small site gets no Chrome UX Report entry at all, so a first-party beacon is the only route to the metrics that rankings actually read.
Which area of the glossary does RUM belong to?
Measurement and evidence: The vocabulary for saying how strongly something is known.
← Lighthouse · LCP →
See it in the full glossary · 668 terms across 19 areas.