A custom audience is a targeting list you build from your own data: customer emails, phone numbers, site visitors, video viewers or app users. The records uploaded to the platform are matched and ads are served against them. It is the basic input for retargeting and for building lookalikes; as data quality drops, so does the match rate.
When uploading lists, phone number format and country code directly affect the match rate; numbers left with a leading zero silently fail to match. The critical point under KVKK (Turkey's data protection law) is having a valid legal basis for processing these lists for advertising; if ad targeting is not covered in the consent text you collected, the list should not be uploaded. Dynamic custom audiences, for example people who added to cart in the last thirty days and did not buy, work better than static lists because they update themselves and leave stale users out.
When uploading lists, phone number format and country code directly affect the match rate; numbers left with a leading zero silently fail to match. The critical point under KVKK (Turkey's data protection law) is having a valid legal basis for processing these lists for advertising; if ad targeting is not covered in the consent text you collected, the list should not be uploaded. Dynamic custom audiences, for example people who added to cart in the last thirty days and did not buy, work better than static lists because they update themselves and leave stale users out.
When uploading lists, phone number format and country code directly affect the match rate; numbers left with a leading zero silently fail to match. The critical point under KVKK (Turkey's data protection law) is having a valid legal basis for processing these lists for advertising; if ad targeting is not covered in the…
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