Used to identify which ads campaign this referral references. Use utm_id to identify a specific ads campaign.
Use utm_source to identify a search engine, newsletter name, or other source.
Use utm_medium to identify a medium such as email or cost-per-click.
Used for keyword analysis. Use utm_campaign to identify a specific product promotion or strategic campaign.
Used for paid search. Use utm_term to note the keywords for this ad.
Used for A/B testing and content-targeted ads. Use utm_content to differentiate ads or links that point to the same URL.