First Party Modeled Audiences Powered by Google is a Google ML modeling service which allows advertisers to take a Lytics Audience built from 1st party data or an existing Google Ads Audience and greatly expand its reach to a new and/or unknown set of potential customers that "look like" the known audience.
Lytics offers the only interface for configuring models, interpreting insights, and activating new audiences with this service. Simply select any of your highly targeted first party audiences built in Lytics or an existing list already in your Ads account as a "seed" to model with.
Refer to our documentation for details and reach out to your Lytics to obtain feature access.