UTM parameters are not the only ones we can track on the website. Ideally we track all parameters in the URL of each visit. It allows us later to calculate marketing attribution and determine where this visit comes from (which campaign). We also can have other params – referrer_id for example, you’ve probably seen those unique links users share on Uber to invite friends – these are custom parameters as well.
It’s important to understand the whole chain of events that happen between someone clicks on a link and new records are created in our...