Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Emotion is a library designed for writing CSS styles with JavaScript.
Gatsby is a React-based open-source framework with performance, scalability and security built-in.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.