AWS, Microsoft Azure, and CloudFlare – services run by gigantic corporations with endless supply of money and talent – all experience catastrophic, global failures that take innumerable other services down with them within 30 days. :blob0w0:
Meanwhile Wikipedia just keeps chugging along, globally stable and reliable as always. :blobcatlove:
And yes, Wikimedia Foundation runs a pretty complex infrastructure:
https://wikitech.wikimedia.org/wiki/Wikimedia_infrastructure