To use third-party audiences

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They are still your target audience and it is a good way to reach them indirectly.

Third party audiences
These lists should match your site's typical visitors or consumers.

you need to work with a data provider.

It's easier when they integrate into Ads benin phone number list Manager (and you can make sure they're GDPR compliant), allowing them to automatically send you lists for you to review or reject.

Custom Intent Audiences (previously Keyword Audiences)
Custom intent audiences are relatively new and require you to select the exact keyword you want to target with your campaign.