Fastly

Fastly, Inc. is an American company based in San Francisco, which describes itself as a cloud computing company. It provides content delivery network services, image optimization, and load balancing services. Its services cover content delivery, edge computing, security, and observability. Its CDN delivers live and on-demand video and serves application programming interface (API) responses.

Fastly was founded in 2011 by the Swedish-American entrepreneur Artur Bergman, previously chief technical officer at Wikia. It debuted on the New York Stock Exchange on May 17, 2019. Its stock began trading on Nasdaq under the ticker symbol FSLY in December 2025. Kip Compton was appointed CEO in June 2025.

Its security services include denial-of-service attack protection, bot mitigation, and a web application firewall. Its Next-Gen web application firewall is based on technology from Signal Sciences, which Fastly acquired in 2020. Fastly's network map listed 622 Tbps of connected global capacity as of June 30, 2026.