Cloudflare, Inc. is an American content delivery network and DDoS mitigation company, founded in 2009. It primarily acts as a reverse proxy between a website's visitor and the Cloudflare customer's hosting provider. Its headquarters are in San Francisco, California. According to The Hill, it is used by more than 20 percent of the entire Internet for its web security services. History Cloudflare was founded in July 2009 by Matthew Prince, Lee Holloway, and Michelle Zatlyn. Prince and Holloway had previously collaborated on Project Honey Pot, a product of Unspam Technologies that served as some inspiration for the basis of Cloudflare. From 2009, the company was venture-capital funded. On August 15, 2019, Cloudflare submitted its S-1 filing for IPO on the New York Stock Exchange under the stock ticker NET. It opened for public trading on September 13, 2019 at $15 per share. In 2020, Cloudflare co-founder and COO Michelle Zatlyn was named president, making her one of the few woman presidents of a publicly traded technology company in the U.S. Cloudflare has acquired web-services and security companies, including StopTheHacker (Feb 2014), CryptoSeal (June 2014), Eager Platform Co. (December 2016), Neumob (November 2017), S2 Systems (January 2020), Linc (December 2020), Zaraz (December 2021), Vectrix (February 2022), and Area 1 Security (February 2022). Since at least 2017, Cloudflare has been using a wall of lava lamps in their San Francisco headquarters as a source of randomness for encryption keys, alongside double pendulums in its London offices and a geiger counter in its Singapore offices. The lava lamp installation implements the Lavarand method, where a camera transforms the unpredictable shapes of the "lava" blobs into a digital image. Products Cloudflare acts as a reverse proxy for web traffic. It supports web protocols including SPDY and HTTP/2, QUIC, and support for HTTP/2 Server Push. Cloudflare provides DDoS mitigation services that protect customers from distributed denial of service (DDoS) attacks. In 2010, Cloudflare launched a Content Distribution Network (CDN) service. TechCrunch wrote that its goal was to be "a CDN for the masses". In 2017 Cloudflare launched Cloudflare Workers, a serverless computing platform for creating new applications, augmenting existing ones, without configuring or maintaining infrastructure. It has expanded to include Workers KV, a low-latency key-value data store; Cron Triggers, for scheduling Cron jobs; and additional tooling for developers to deploy and scale their code across the globe. On September 25, 2019, Cloudflare released a freemium