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What is Fastly?


On 8 June 2021, Fastly reported problems with their CDN service which caused many major websites, such as Reddit,, Twitch, Spotify, and Amazon, along with major news sources such as The New York Times, The Guardian, CNN, and the BBC, to become unavailable.

  • Fastly is an American cloud computing services provider.
  • It describes its network as an ‘edge cloud platform’, which is designed to help developers extend their core cloud infrastructure to the edge of the network, closer to users.
  • The Fastly edge cloud platform includes their content delivery network (CDN), image optimization, video and streaming, cloud security, and load balancing services.
  • A content delivery network is an arrangement that allows customer websites to store data such as images and videos on various mirror servers across countries so that the data is closer to users, and thus shows up faster.
  • Customers rely on Fastly and its rivals to host and protect their website data from denial-of-service attacks and disruption from spikes in traffic.