Final answer:
Customer Match and Similar Audiences are advertising features offered by Ads. Customer Match allows businesses to target existing customers, while Similar Audiences helps expand the reach to users who are similar to the existing customers.
Step-by-step explanation:
Customer Match and Similar Audiences are both advertising features offered by Ads that help businesses target specific audiences.
Customer Match allows businesses to reach their existing customers by uploading a list of customer email addresses or phone numbers. matches the information provided with users who are signed in to their account, allowing businesses to show targeted ads to these individuals on various platforms.
Similar Audiences uses machine learning to identify users who share similar characteristics and interests to a business's existing customers. This expands the reach of ads to a larger audience that is likely to be interested in the products or services offered.