A dimension is a descriptive attribute used to group or break down measurement data, such as campaign, browser or city. GA4 distinguishes these attributes from metrics, the quantitative measures calculated for those groups.[1] In a table of revenue by campaign, campaign is the dimension and revenue is the metric.
Choose a dimension appropriate to the store question: product category for assortment, device for shopping experience or traffic source for acquisition. Also check the attribute's scope. The campaign that first acquired a user is not automatically the campaign of the current session. Naming those levels explicitly helps prevent a technically correct report from being used to answer the wrong business question.
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Compiled with AI assistance using public sources. General explanation, not individual legal or tax advice. Describing a concept does not mean Zoloo offers it as a feature.