Shopify is a subscription-based software that allows anyone to set up an online store and sell their products. Shopify store owners can also sell in physical locations using Shopify POS, a point-of-sale app and accompanying hardware.

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.

Fly is a platform for running full stack apps and databases.

Varnish is a reverse caching proxy.

Apache Traffic Server is an open-source caching and proxying server that serves as an HTTP/1.1 and HTTP/2 reverse proxy with caching capabilities, load balancing, request routing, SSL termination, and support for advanced HTTP features.

Amazon Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality.

Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services (AWS) that provides object storage through a web service interface.

Cloud CDN uses Google's global edge network to serve content closer to users.

Google Cloud is a suite of cloud computing services.

Amazon CloudFront is a fast content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds.

Amazon Application Load Balancer (ALB) distributes incoming application traffic to increase availability and support content-based routing.

Google Analytics is a free web analytics service that tracks and reports website traffic.

Google Hosted Libraries is a stable, reliable, high-speed, globally available content distribution network for the most popular, open-source JavaScript libraries.

Google Font API is a web service that supports open-source font files that can be used on your web designs.

Ruby is an open-source object-oriented programming language.

A modest JavaScript framework for the HTML you already have.

Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.

cdnjs is a free distributed JS library delivery service.

YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.

SweetAlert is a JavaScript library that provides alternative alert and modal dialog boxes for web applications, with customisable features, aiming to improve the user interface of the default browser dialogs.

Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.

Unpkg is a content delivery network for everything on npm.