UTM Parameter
A UTM parameter is a tag appended to a URL's query string that tells analytics tools where a click originated. The five standard parameters (utm_source, utm_medium, utm_campaign, utm_term, and utm_content) let marketers label and track exactly which channel, campaign, and creative drove each visit.
UTM stands for Urchin Tracking Module, named after the analytics company Google acquired to build Google Analytics. When a user clicks a tagged link, the analytics platform reads the parameters and groups the session under the right source and campaign, making it possible to compare performance across emails, ads, and social posts.
The biggest pitfall is inconsistent tagging: "Facebook" versus "facebook" versus "FB" splits one channel into three in reports. Teams avoid this with a documented naming convention and a shared UTM builder. UTM data is a primary input for marketing attribution.
Last updated: 14 June 2026