Audience Signals
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Audience signals are targeting hints provided to Performance Max campaigns to indicate which users are most likely to convert. Unlike traditional targeting, signals are suggestions — Google can reach users outside your specified audiences.
Signals include first-party data (customer lists, site visitors), custom segments (search terms, competitor URLs), in-market audiences, and demographics. They serve as a starting point for PMax's machine learning.
Signal quality directly affects how quickly PMax learns. Providing your best customer list teaches the algorithm what ideal customers look like. Without signals, PMax starts with no guidance and wastes budget during learning.
In PMax asset groups, add signals from three categories: your data (customer lists, visitors), custom segments (terms your customers search, competitor URLs), and Google audiences (in-market, affinity, demographics). Layer multiple signal types.
Audience signals are the primary way you influence Performance Max targeting. Well-configured signals reduce the learning period, improve early performance, and guide AI toward high-value customers rather than easy-to-convert low-value users.
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Frequently Asked Questions
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No. Targeting restricts delivery to the selected audience. Signals are suggestions — Google uses them as a starting point but expands beyond them if it finds converting users elsewhere.
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Your own customer data (purchasers, high-value customers) is the strongest signal. Custom segments based on competitor searches and in-market audiences are also effective.
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Multiple types — your customer list, 2-3 custom segments, and relevant in-market audiences. More signals give the algorithm more starting points, but do not add irrelevant ones.
Performance Max not finding the right customers?
We configure audience signals based on your first-party data to accelerate PMax optimization.