What's the difference between Core, Custom, and Lookalike audiences?

Core audiences are built from Meta's demographic/interest data. Custom audiences come from your own data (pixel, customer list, engagement). Lookalike audiences are new users similar to a source custom audience - start at 1% similarity for accuracy.

Go deeper

Want the full playbook? Read Beginner’s Playbook for Google Ads Audiences — Keywords matter, but they’re only part of the picture. This guide explains the 8 main Google Ads audience types, when to use them, and how to launch them without cluttering your account.