Integrating Sales Software with Website Payment via Apple Pay

Hi. I have reviewed the process of integrating Apple Pay on the web, but I still don’t understand how to implement it. For example: I currently have software A and a payment website that my software provides to restaurants. So, how can I integrate Apple Pay on the restaurants' payment websites?

  1. I read that to integrate, we need to register for a Merchant ID with Apple Pay. So, is it the restaurants or the software provider who should register?
  2. Each restaurant will have a different website domain -> does that mean when registering the Merchant ID, the website domain is the payment website of each restaurant?
  3. When Apple Pay provides the verification file, the sales software (i.e., the payment website) must help the restaurants upload that file to the payment website of each restaurant, right?
  4. To verify if it is valid or not depends on Apple Pay, right? If it is valid, the Apple Pay payment button will be displayed, correct?
Integrating Sales Software with Website Payment via Apple Pay
 
 
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