Let's talk retargeting! Let's say you have an audience of 50, 000 visitors to a product.Let's talk retargeting! Let's say you have an audience of 50, 000 visitors to a product. Whats the optimization goal of a campaign targeted at those users? Reach, Traffic, or Conversions? Thankspically I have done Reach campaigns, with a low budget, and make sure the retention period for the audience isn't longer than 30 days.