What is what asset is used to build a remarketing list?

An asset commonly used to build a remarketing list is a tracking pixel. This is a small piece of code that is added to a website or landing page, which tracks visitors' behavior and actions on that page. The pixel sends this information back to the remarketing platform, which can then use it to create a list of people who have visited the site and shown interest in the product or service being offered. Other assets that can be used to build a remarketing list include customer email lists and CRM (customer relationship management) data.