An audience of new people who share characteristics with your source audience, like past purchasers or high-value customers. Meta models these audiences based on thousands of signals. Lookalikes can help you prospect more efficiently than pure broad targeting.
Lookalike percentages:
- 1% = closest match to your source (smallest audience)
- 10% = loosest match (largest audience)
- Most advertisers start with 1-3% lookalikes