Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.
Fly is a platform for running full stack apps and databases.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
OneTrust is a cloud-based data privacy management compliance platform.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.
A modest JavaScript framework for the HTML you already have.
Unpkg is a content delivery network for everything on npm.
Varnish is a reverse caching proxy.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.