Glossary / Session default channel group

Session default channel group

GA4's automatic bucketing of each session's traffic source into a channel - Organic Search, Direct, Referral, Paid Search, Organic Social, Email, and more - based on source, medium, and campaign.

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"What are my top channels by sessions this quarter?"

Field details

TypeDimension
GA4 API namesessionDefaultChannelGroup

Good to know

GA4's channel definitions changed from Universal Analytics rather than carrying over unchanged - Organic Social and Paid Social were split into separate channels, and "Cross-network" is new (covers Google Ads campaigns spanning Search, Display and YouTube without disclosing which network served a given impression).

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Related fields

Sources

  • Google Analytics Data API - dimensions & metrics reference (official Google documentation)