89.6% of European companies running a CDN are behind Cloudflare.

CipherCue fingerprinted HTTP responses and DNS across 44,143 European companies in eight countries: 39,547 on Cloudflare, CloudFront a distant second at 3,112, Fastly 1,299, Akamai 396. Country shares run 95.6% in the Netherlands and 93.2% in the UK down to 78.8% in Spain and Ireland. The authors flag their own bias toward small and mid-sized companies, which favors the free tier. The conclusion they draw is correlated failure: a Cloudflare incident is most of the European market's outage on the same afternoon.