Medium
The category of a web traffic sourceThe origin of your traffic, such as a search engine or website. Medium: the general category of the ..., for example, organic search (Organic), cost-per-click paid search (CPC(Cost Per Click)
The amount of money spent to get an ad clicked when running PPC campaigns.), web referralThe website a user visited prior to visiting another website. Typically the user clicked on a link t... (ReferralThe website a user visited prior to visiting another website. Typically the user clicked on a link t...).