Which audience targeting method allows you to upload a list of existing customers?

Custom Audiences allows you to upload a list of existing customers. Specifically, you can upload a customer list containing email addresses, phone numbers, or physical addresses. Microsoft Ads then attempts to match these customer records with user accounts on its platform. This allows you to target your ads specifically to your existing customers, or to create 'lookalike' audiences based on the characteristics of your existing customer base. For instance, you could upload a list of your high-value customers and create a lookalike audience to find new customers who share similar demographics and online behaviors.