Comment by imoverclocked

> I don't know what even will cause a global internet outage at the scale but it will be global panic.

A coordinated attack on key infrastructure (eg: root DNS servers) could do it. Much of the internet is held together with duct tape and bubble gum. The reason it stays alive is because there are a lot of duct tape and bubble gum specialists :)

There are still a lot of ways to communicate without the internet over large distances (eg: radio, satellite, plane, drone, etc...) and there are different considerations/requirements for them. They are still an ultimate backup to the world we have created but shopping on Amazon via ham-radio would be quite painful!