Cloudflare, Inc. is an American multinational technology company specializing in web infrastructure and cybersecurity services. Founded in 2009 by Matthew Prince, Lee Holloway, and Michelle Zatlyn, it has grown into a major provider of internet performance and security solutions. Headquartered in San Francisco, California, Cloudflare operates a global network that spans over 310 cities in more than 120 countries, handling a significant volume of internet traffic. Its core offerings include a content delivery network (CDN) for faster content distribution, DDoS mitigation to protect against cyber attacks, web application firewalls, DNS services like the privacy-focused 1.1.1.1 resolver, and ICANN-accredited domain registration. The company also provides advanced features such as zero-trust security models, edge computing through Cloudflare Workers, and wide area network optimization, serving a diverse clientele from small websites to large enterprises.

Cloudflare went public on the New York Stock Exchange in September 2019 under the ticker symbol NET, achieving a market capitalization that reflects its pivotal role in the digital economy. It has been instrumental in enhancing internet resilience, particularly during high-profile events like major DDoS attacks and global disruptions. However, the company has faced controversies, including allegations of enabling access to extremist content through its services, leading to debates on content moderation responsibilities. Cloudflare has also been involved in legal disputes, such as patent infringement lawsuits filed by Akamai Technologies' CEO Tom Leighton, where Cloudflare was sued and counter-sued, highlighting competitive tensions in the CDN space. Additionally, it has drawn criticism for privacy practices and its handling of data requests from governments, with ongoing investigations into compliance with international regulations.

As a key player in influence networks, Cloudflare's infrastructure underpins much of the modern web, influencing data flows, security standards, and digital rights. Its political affiliations include donations to various causes, though it maintains a generally neutral stance. Financially robust with revenue primarily from subscriptions and enterprise services, Cloudflare continues to expand, acquiring companies like Area 1 Security to bolster its offerings. Despite challenges, including SEC scrutiny over disclosures and ethical debates on free speech versus safety, it remains a cornerstone of internet infrastructure.