A UTM code is a piece of text that you add to a normal url. With this code you can measure how people visit your website.
An example of a link with UTM code is:
A UTM code usually consists of the following elements:
Campaign source (from which source is the reference? For example: Facebook or a newsletter)
Campaign medium (what form of marketing is it? For example: email, banner or influencer marketing)
Campaign name (what is the name of the campaign? For example: blackfriday2021)
There are several online tools to easily create a UTM code, such as UTM Builder.
UTM codes and influencer marketing
By using a unique UTM code per influencer, you know exactly which traffic comes through which influencer. This is a way to measure the results of your collaboration.