Tiny Feet has their own website.They want to reach their website's audience with an Amazon campaign.From which source should they transfer their audience?

A pixel (or tracking pixel) is a piece of code placed on a website that collects data about visitors' behavior. Tiny Feet can use a pixel on their website to gather information about their audience, such as pages viewed and products interacted with. This data can then be transferred to Amazon's advertising platform to create custom audiences for targeted campaigns, allowing Tiny Feet to re-engage users who have previously visited their site. "Audiences based on shopping interactions on Amazon" refers to audiences built from activity on Amazon, not on Tiny Feet's external website. A "Data management platform" (DMP) is a broader system for managing and organizing audience data from various sources, but the direct mechanism for collecting data from Tiny Feet's own website for transfer is the pixel.