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

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

Phusion Passenger is a free web server and application server with support for Ruby, Python and Node.js.

Linkedin Ads is a paid marketing tool that offers access to Linkedin social networks through various sponsored posts and other methods.

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

Stripe offers online payment processing for internet businesses as well as fraud prevention, invoicing and subscription management.

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.

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

Varnish is a reverse caching proxy.

Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming 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 Web Services (AWS) is a comprehensive cloud services platform offering compute power, database storage, content delivery and other functionality.

Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

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

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.