An advertiser provides a list of their current high-value consumers as a hint to help Google AI find new consumers with high conversion potential. Which feature allows the system to look beyond this manual list to find additional relevant segments?

Optimized targeting is the feature. The advertiser's audience — here a list of high-value customers — is treated as a signal rather than a hard boundary, and optimised targeting uses it as a starting point to find additional people who are likely to convert, including those who do not appear in the original segment. That matters because the customers a business already knows about are rarely the full set of people who would buy. Real-time conversion data guides the expansion, so it adapts as the campaign learns. The advertiser keeps meaningful control: the signal lists still shape where it looks, exclusions still apply, and performance can be compared against the seed audience to confirm the extra reach is converting rather than merely adding impressions.