Session medium
The general category of the traffic source for a session, e.g. organic, cpc, referral, or email.
Ask it in plain English
"What mediums are driving sessions to my pricing page?"
Field details
| Type | Dimension |
| GA4 API name | sessionMedium |
Good to know
Google's auto-tagging can backfill this to "cpc" purely from a gclid parameter it recognizes, even with no utm_medium set on the URL - one reason a Google Ads click can show up correctly tagged without anyone manually adding UTM parameters to the destination link.
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Related fields
Sources
- Google Analytics Data API - dimensions & metrics reference (official Google documentation)