[3] Fastly's cloud security services include denial-of-service attack protection, bot mitigation, and a web application firewall.

[6][7][better source needed] Fastly was founded in 2011 by the Swedish-American entrepreneur Artur Bergman, previously chief technical officer at Wikia (now Fandom).

[14] In April 2017, Fastly launched its edge cloud platform along with image optimization, load balancing, and a web application firewall.

[27][28] In August 2022, Todd Nightingale, previously employed by Cisco as Executive Vice President of Enterprise Networking and Cloud business, was hired to serve as Fastly's CEO, succeeding Joshua Bixby.

[34] Fastly's CDN service follows the reverse proxy model, routing all website traffic through their own servers instead of providing a 'cdn.mydomain.com' address to store site-specific files.

[36] Fastly supports the UDP-based HTTP/3 protocol, as well as DRM enabled content, encryption and secure tokens to restrict media access.