Possible Values of the refr_medium Field in Snowplow
Blog post from Snowplow
Understanding the refr_medium field is crucial for accurately classifying traffic sources in Snowplow data. This field can take several values, including NULL, internal, social, search, email, and unknown, each determined by the configuration in the referer-parsing YAML file, which categorizes domains by medium. If a referrer is classified as unknown, users may update the YAML file to ensure accurate classification, potentially submitting a pull request for official updates. Snowplow allows customization of the YAML file, which will soon be decoupled from the enrichment pipeline to enable more flexible updates. Users can query the refr_medium values in Redshift to analyze traffic distribution, ensuring accurate tracking and data coverage.