I believe PayPal Website Payments Pro is just a payment gateway and merchant account in one. The customer never knows PayPal are involved, it's all handled on y

I believe PayPal Website Payments Pro is just a payment gateway and merchant account in one. The customer never knows PayPal are involved, it's all handled on your site and via their API. Whereas Google and Amazon's services are exactly like PayPal's traditional service, where your customers are redirected to their site to make payment. I don't think either of them provide a payment-gateway like service.