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

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

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

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

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

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.

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.