CDN market share and adoption statistics

Which CDN has the largest usage share?

Note: CDN leadership changes by measure, so reverse-proxy usage, detected websites and company revenue should not be treated as the same metric.

• Cloudflare leads W3Techs’ reverse-proxy tracker, appearing on about 23.6% of all websites.
• Among websites whose reverse proxy service is known to W3Techs, Cloudflare holds about 83.6% share.
• Amazon CloudFront, Fastly and Akamai follow far behind in W3Techs’ reverse-proxy tracker.
• By total company revenue, Akamai is larger, reporting about $4.21 billion in 2025 revenue.
• Cloudflare’s free plan includes a global CDN, which helps explain why it is common across small sites, though tracker data does not prove why each site chose it.

The split matters. Cloudflare leads by W3Techs reverse-proxy usage and detected website count, while Akamai is larger by total company revenue. Those are different measures, so both can support different kinds of leadership claims.

What percent of websites use a CDN?

Note: CDN adoption varies by detection method, traffic tier and resource type, so the measured lens matters.

• HTTP Archive’s 2025 Web Almanac reports CDN adoption at about 70% among the top 10,000 mobile sites by CrUX rank.
• The same report puts CDN adoption at 71% among the top 1,000 sites and 62% among the top 100,000 sites.
• By resource type, HTTP Archive found CDN usage at 35% for HTML, 52% for subdomain resources and 71% for third-party resources on mobile.
• W3Techs separately reports Cloudflare at 23.6% of all websites as a reverse proxy service.
• Free and bundled CDN options have helped CDN use spread beyond high-traffic sites, but adoption is not measured consistently across trackers.

CDN use is common among popular sites, but it is not accurate to call it near-universal under the HTTP Archive methodology. The answer changes depending on whether you measure full sites, HTML requests, subdomain resources, third-party resources or reverse-proxy detections.

What is the Cloudflare versus Akamai versus Fastly market share?

• By W3Techs reverse-proxy usage, Cloudflare leads clearly, while Akamai and Fastly hold much smaller shares.
• By total company revenue, Akamai is larger at about $4.21 billion in 2025, ahead of Cloudflare’s $2.17 billion and Fastly’s $624 million.
• Akamai reported $1.26 billion in 2025 Delivery revenue, down 5% year over year.
• Fastly reported $477.8 million in 2025 Network Services revenue, which includes solutions for websites, apps, APIs and digital media.
• Cloudflare spans a wide base, from free website plans to enterprise connectivity, security and developer services.

These companies overlap in CDN, edge, security and cloud delivery, but their public metrics emphasize different strengths. Cloudflare leads in W3Techs reverse-proxy usage, Akamai is larger by total company revenue and Fastly is smaller by revenue while emphasizing programmable edge and network services. For pricing, see our CDN cost research.

How fast is CDN adoption growing?

Note: adoption growth figures vary by source because HTTP Archive measures CDN-served resources while W3Techs measures reverse-proxy services on websites.

• HTTP Archive found HTML content served from CDNs rising from 33% in 2024 to 35% in 2025 on mobile.
• Subdomain content stayed at 52%, while third-party content declined from 75% to 71% in the same HTTP Archive dataset.
• W3Techs’ reverse-proxy history shows Cloudflare rising from about 11% of all websites in 2020 to 23.6% in 2026.
• Free and bundled CDN options likely help adoption among smaller sites, but sources measure that trend differently.
• Among popular sites, HTTP Archive reports higher CDN adoption than lower-ranked tiers, but not near-total adoption under its methodology.

CDN use has shifted from a performance extra to a common layer of modern web delivery, but the growth story depends on the measurement. Resource-level CDN use, reverse-proxy detection and provider-specific website share are related, but they are not interchangeable.

How many websites use Cloudflare?

• BuiltWith’s tracker detects Cloudflare’s CDN on tens of millions of websites, with the exact count varying by whether redirects and historical results are included.
• W3Techs detects Cloudflare on about 23.6% of all websites as a reverse proxy service.
• W3Techs gives Cloudflare about 83.6% share among websites whose reverse proxy service is known.
• Cloudflare’s network spans more than 330 cities across more than 125 countries and regions.
• Cloudflare’s revenue reached about $2.17 billion in 2025, up 29.8%, with 49% from the US and 51% from international customers.

Cloudflare’s scale comes from a large free website plan and a broad network, but the exact count depends on the tracker. BuiltWith reports detected customer websites, W3Techs reports reverse-proxy usage share and Cloudflare reports millions of customers and web properties rather than a directly comparable active-domain count. For what CDN options cost, see our CDN cost research.

Sources & additional resources

• W3Techs. “Usage Statistics and Market Shares of Reverse Proxy Services.” W3Techs.
• W3Techs. “Historical Yearly Trends in the Usage Statistics of Reverse Proxy Services.” W3Techs.
• HTTP Archive. “CDN | 2025 Web Almanac.” HTTP Archive Web Almanac.
• Cloudflare. “Cloudflare Announces Fourth Quarter and Fiscal Year 2025 Financial Results.” Cloudflare.
• Cloudflare, Inc. “2025 Form 10-K.” U.S. Securities and Exchange Commission.
• Akamai. “Akamai Reports Fourth Quarter and Full-Year 2025 Results.” Akamai.
• Fastly. “Fastly Announces Record Fourth Quarter and Full Year 2025 Results.” Fastly / Business Wire.
• BuiltWith. “Cloudflare CDN Usage Statistics.” BuiltWith.
• Cloudflare. “Cloudflare Plans and Pricing.” Cloudflare.

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