To enable Apple Pay and Google Pay on an iframe, you will need to add the top-level domain that the iframe is embedded on as verification with Apple Pay. To add this top level domain, please reach out to [email protected].

Add the attributes allowpaymentrequest="true" and allow="payment" to the iframe implementation.

You will need to host the file at /.well-known/apple-developer-merchantid-domain-association. For example, if you register https://yourdomain.com, make that file available at https://yourdomain.com/.well-known/apple-developer-merchantid-domain-association

Once this file is hosted, reach back out to [email protected] to receive confirmation that your domain is verified.