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

Varnish is a reverse caching proxy.

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.

PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.

Google Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.

Python is an interpreted and general-purpose programming language.

Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.

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.

Django is a Python-based free and open-source web application framework.

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