La ______ ayuda a los anunciantes a realizar comparaciones con los estándares del sector o con otras inversiones en medios.

External measurement helps advertisers compare their performance against industry benchmarks or other media investments. This involves using third-party data and analytics to gain an objective perspective on campaign effectiveness relative to competitors or broader market trends. First-party measurement, while valuable, focuses solely on data collected directly by the advertiser, limiting its scope for external comparisons. Brand metrics are specific data points related to brand health (e.g., awareness, perception) and don't inherently provide a comparative framework against industry standards or other media channels.