If you choose to track affiliate sales with a UTM link or discount link, you have the ability to customize the landing page of the tracking links generated.
To do this, head to the Programs tab of your dashboard and click on the program whose tracking links you'd like to customize.
From within the program builder page, scroll to the Tracking settings card. Here, you will see a field titled "Landing Page".
You can customize landing pages of tracking links to be:
Your store's homepage
Any product page
Any collection page
Any custom page on your store