CloudFlare以向客户提供网站安全管理、性能优化及相关的技术支持为主要业务。通过基于反向代理的内容传递网络(Content Delivery Network,CDN)及分布式域名解析服务(Distributed Domain Name Server)，CloudFlare可以帮助受保护站点抵御包括拒绝服务攻击(Denial of Service)在内的大多数网络攻击，确保该网站长期在线，同时提升网站的性能、加载速度以改善访客体验。
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CloudFlare
CloudFlare, Inc. is a U.S. company that provides a content delivery network 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 network protects, speeds up, and improves availability for a website or mobile application with a change in DNS. CloudFlare is headquartered in San Francisco, California, with additional offices in London and Singapore.