Channels provide top-level groupings of your a marketing model whose sales performance relies on the initiative of its client base to find and purchase a product.. Each channel combines Source is one of the four main dimensions (along with medium, campaign and channel) for reporting and analyzing how people found your website. Source tells you where the message was seen. For example, a source of ‘google’ would indicate that someone found your website after performing a search on Google. Source can be used in combination with medium for more granular insights, for example, a source of ‘google’ and a medium of ‘cpc’ would be reported for paid clicks from your AdWords campaigns.... Always-R Glossary and Medium is one of the four main dimensions (along with source, campaign and channel) for reporting and analyzing how people found your website. Medium tells you how the message was communicated. For example, ‘organic’ for free search traffic, ‘cpc’ for cost-per-click and ‘referral’ for inbound links from other websites.... Always-R Glossary so you can understand overall performance. For example, the default channel grouping includes ‘Organic Search’, ‘Paid Search’, ‘Social’ and ‘Email’ which automatically combines pre-defined sources and mediums. You can also configure your own custom channel groupings.