Meta Ads glossary

What Is Lookalike Audience?

Definition

A Lookalike Audience is a Meta audience of people who share characteristics with a selected source audience.

How Lookalike Audience Works

Meta models common patterns in a source such as customers, qualified leads or high-value purchasers and finds other people in the selected location who resemble that pattern.

A Simple Example

A retailer can create a lookalike from its highest-value customers rather than from every website visitor, giving the model a stronger seed.

Why Lookalike Audience Matters

Lookalikes can extend first-party audience signals to reach new potential customers.

Common Misreading

The output is only as useful as the source. A large but low-quality seed can teach the system the wrong customer pattern.

Go deeper

Continue with the practical guide

The glossary gives you the definition. The guide covers implementation and decision-making in more depth.

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