Amazon Pay is an online payments processing service that is owned by Amazon. It lets you use the payment methods associated with your Amazon account to make payments for goods and services.
American Express, also known as Amex, facilitates electronic funds transfers throughout the world, most commonly through branded credit cards, debit cards and prepaid cards.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Google Analytics is a free web analytics service that tracks and reports website traffic.
MasterCard facilitates electronic funds transfers throughout the world, most commonly through branded credit cards, debit cards and prepaid cards.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.
Shopware is an enterprise-level ecommerce platform.
A modest JavaScript framework for the HTML you already have.