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.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Next.js is a React framework for developing single page Javascript applications.
Vercel is a cloud platform for static frontends and serverless functions.