Cloudflare, Inc. is an American company headquartered in San Francisco that provides a range of internet services, including content delivery network services, cybersecurity, DDoS mitigation, wide area network services, reverse proxies, Domain Name Service, and ICANN-accredited domain registration. Cloudflare was founded in 2009 by Matthew Prince, Lee Holloway and Michelle Zatlyn, and in 2019 the company went public. According to W3Techs, Cloudflare is used by around 19.3% of all websites on the Internet for its web security services, as of January 2025. Wikipedia