What is the difference between a lookalike audience and a custom audience on Facebook/Meta?

Question

Digital Marketing — Medium

What is the difference between a lookalike audience and a custom audience on Facebook/Meta?

Accepted Answer

The distinction between lookalike and custom audiences on Facebook lies in their source. A custom audience is derived from existing customer data, whereas a lookalike audience is generated based on similarities to the custom audience. This difference is crucial for targeting. The correct answer highlights this distinction.