UTM tracking is a marketing tool that lets you understand what is driving traffic to your typeforms by adding information to your URL.
UTM is a code snippet in your typeform URL that shows you the source of your responders. The parameters you can track are source, medium, campaign, term and content. For example, you can use &utm_source=facebook to track your responses coming from Facebook.
You can check for these values in your analytics reports to gain insights on the marketing performance of your typeform. Learn how to connect your typeform to Google Analytics here.