Ad - Urchin Tracking Module (UTM) - or Campaign Parameters

About

Urchin Tracking Module (UTM) are tracking information added to an URL and are also known as campaign parameters.

They are used on every HTML document such as a web page or an email to track clickthrough rate

Parameters	Mandatory	Definition	Example
utm_campaign	Yes	Identifies a specific product promotion or strategic campaign.	utm_campaign=spring_sale
utm_source	Yes	Identifies which site sent the traffic, and is a required parameter	utm_source=Google
utm_medium	Yes	Identifies what type of link was used, such as cost per click or email.	utm_medium=cpc
utm_term	-	Identifies search terms	utm_term=running+shoes
utm_content	-	Identifies what specifically was clicked to bring the user to the site, such as a banner ad or a text link. It is often used for A/B testing and content-targeted ads.	utm_content=logolink or utm_content=textlink

https://www.example.com/
    ?utm_campaign=summer-sale
    &utm_source=summer-mailer
    &utm_medium=email

where:

utm_campaign - identify the overall campaign named summer-sale
utm_medium identify that the traffic comes from an email
utm_source identify that the summer-mailer campaign which is a sub campaign of summer-sale

[link](https://www.target.com/?
    utm_source=referrer   &
    utm_medium=github   &
    utm_campaign=tpl_lang_tutorial
)

 utm_source=Criteo&utm_medium=Retargeting&utm_campaign=Perry_Criteo

https://www.cloudflare.com/learning/bots/what-is-a-bot/?utm_referrer=https://www.google.com/