Lookalike audience

A lookalike audience is a way to reach new people who are likely to be interested in your business because they're similar to your best existing customers. When you create a lookalike audience, you choose a source audience (a custom audience created with your pixel data, your mobile app data, or fans of your Facebook page) and Facebook will identify the common qualities of the people in it (e.g., demographic information or interests) and find similar people.

Lookalike audiences are a key component of any successful social media advertising strategy, as they can help to improve the ROI of your advertising efforts.