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

WebSocket is a communication protocol that provides full-duplex communication channels over a single, long-lived connection, enabling interactive communication between web browsers and servers.

Vercel is a cloud platform for static frontends and serverless functions.

Envoy is an open-source edge and service proxy, designed for cloud-native applications.