What is Cloudflare – and why did its outage take down so many websites?

Theguardian • November 18, 2025

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Bet365, League of Legends, Sage, YouTube and Google were among those taken offline as provider tried to fix problem

Cloudflare outage causes error messages across the internet

The internet infrastructure provider Cloudflare suffered an outage on Tuesday, making many websites inaccessible for three hours.

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Cloudflare Outage Disrupts Major Websites and Apps A significant outage at Cloudflare has resulted in numerous major websites and applications going offline. The incident has particularly impacted financial services firms that rely on Cloudflare's network and security services. 36 sources 43

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Bet365 Cloudflare Google Sage YouTube