Issues at Content Delivery Network (CDN) providers have caused several high-profile outages over the past few years — a Cloudflare outage last month impacted a large proportion of its customers; a Fastly outage a year ago knocked out websites ranging from Amazon to CNN; and another Cloudflare outage in 2020, this time to its 1.1.1.1 DNS service, had a similarly broad impact. In each case, the cause has been relatively random, though the common denominator has been human error.

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