Create 3-5 interest-based audiences for initial testing

One interest per ad set for clean data

Build a 1% lookalike from purchase events once you have 100+ purchases

This becomes your highest-performing audience

Set up custom audiences for website visitors (7, 14, 30 day windows)

Essential for retargeting campaigns

Test competitor audiences only if you have区分ange differentiate

Competitor audiences work best when you offer better value

Check audience overlap weekly and consolidate overlapping sets

Use Audience Overlap tool in Meta Ads Manager

Refresh lookalike audiences bi-weekly as your pixel data grows

More purchase data = better lookalike quality