Cloudflare is a company that provides a content delivery network, internet security services and distributed domain name server services, sitting between the visitor and the Cloudflare user’s hosting provider, acting as a reverse proxy for websites. Its services protect websites from various attacks, such as distributed denial of service (DDoS), and by ensuring the website is available by serving it from a network of global data centers. Cloudflare’s services also include SSL/TLS, performance optimization, and a content distribution network.