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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryMeasurement & AttributionUTM Parameters

Measurement & Attribution

UTM Parameters

Tags appended to a URL to identify the source, medium, and campaign of traffic.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

UTM parameters are tags appended to a URL to identify the source, medium and campaign that sent traffic, along with optional term and content values. Analytics tools read these tags to attribute visits and conversions to specific campaigns. Consistent naming conventions are essential, since inconsistent tags fragment reporting.