Cloudflare is a technology company whose connectivity cloud brings together networking, security, and performance services for organizations and individual users. Its offerings help businesses modernize applications and networks, protect websites and APIs, improve digital experiences, and maintain application availability. Products include content delivery and DNS services, DDoS protection, web application and API security, bot management, load balancing, and zero-trust access through Cloudflare One. The company also provides developer tools for building and deploying serverless applications, running machine-learning models, managing data, and delivering real-time media.

Cloudflare supports customers ranging from small businesses to large enterprises, as well as partners, developers, and service providers. Its free 1.1.1.1 DNS resolver is designed to provide fast, privacy-focused DNS resolution and supports encrypted DNS transport using DNS over HTTPS or DNS over TLS. Cloudflare also offers free DNSSEC support, while its network supports TLS 1.3 and technologies such as Encrypted Client Hello to strengthen connection privacy. Alongside its products, the company provides documentation, technical resources, demos, customer support, and threat and internet-traffic research.