How Customer Match Works
Advertisers upload or connect customer information such as emails or phone numbers. Google hashes and matches eligible records to signed-in users, subject to policy and account requirements.
A Simple Example
A retailer can exclude recent purchasers from a new-customer campaign or create an audience signal from high-value customers.
Why Customer Match Matters
Customer Match helps advertising reflect real customer relationships and can improve new-customer measurement and audience strategy.
Common Misreading
An uploaded list is not the same as a matched audience. Match rates vary, and the data must be collected and used with appropriate permission.