The Internet was built with de-centralized infrastructures in mind. To scale globally, network providers like CloudFlare have emerged, to run decentralized infrastructures and offer them as a service. In general, keeping service independent of each others and maintaining heterogeneous networks have a proven track record of resilience, that is not necessarily inherent to the architecture of these providers. Just like Akamai had a bad day in 2004, CloudFlare today suffered from a global outage, that left many obvious collateral problems visible all over the Internet. Bloomberg, among others, reports:
CloudFlare Inc., an internet service meant to protect websites from going down, faced its own network issues on Tuesday, leading to several prominent sites — like blogging platform Medium and video game chat provider Discord — being unavailable for some time.
Source: Net Defender CloudFlare Goes Down, Taking Many Websites With It – Bloomberg