You have created a custom audience, but unfortunately, you cannot import it into the Soprism platform either because you don't have the rights or because the size of your audience is too small?
The option to create a lookalike audience from your custom audience directly in your business manager is your solution! Therefore, you have selected your source (the custom audience), chosen a location, and all that remains is to select the percentage to apply.
The percentage corresponds to the audience size that will be considered based on the overall size defined by the geolocation you previously selected. The lower the percentage, the more Meta will create a lookalike audience with people who are closest to your custom audience. The higher the percentage, the larger the audience size considered will be, and the less "faithful" it will be.
When it comes to obtaining a profiling that most closely resembles a custom audience, the tests carried out by our team of experts show that:
if your custom audience is more than 5% of the selected national population
👉 we advise you to launch a lookalike audience of 10%.if your custom audience is between 1% and 5% of the national population
👉 we advise you to launch a lookalike audience of 8%.if your custom audience is between 0.1% and 1% of the selected national population
👉 we advise you to launch a lookalike audience of 3%.if your custom audience is less than 0.1% of the selected national population
👉 we advise you to launch a lookalike audience of 1%.