What is custom audience?

An ad audience built from your customer list, site visitors or people who engaged with you.

Custom audiences reach people who already know your brand and are the basis of retargeting. Lookalike audiences are built from them.

When uploading customer lists, follow the rules on personal data protection.

Updated: October 12, 2026 · All terms

Run your social media from one panel

IZY Social writes posts in your brand's voice, publishes them at the right time and reports the results.