this post was submitted on 20 Oct 2025
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My friend messaged me on Signal asking if Instructure (runs on AWS) was down. I got the message. That being said, it's scary that Signal's backbone depends on AWS
Why is this scary? That's what e2ee is for, so that no one besides your recipient can view the contents of a message. It does not matter which server is used. If anything for a service like Signal, you want a server with high availability like AWS, Azure, Google Cloud or Cloudflare.
Scared because it's centralized. If Amazon decides that it wants to shut Signal down, they can. Nobody can spin up a Signal instance and help out.
I would be surprised if Signal didn't have a contract with another cloud provider as well, incase of this sort of thing.
I hope they consider other ways of doing things after this incident.
Willing to bet a lot of companies will be considering that now lol. Will it actually happen though? ¯\_(ツ)_/¯