AWS Australia network connectivity failures
status.ably.io
status.ably.io
We can confirm that this is indeed having significant impact globally with intermittent connections from regions around the world.
AWS state that "Connectivity to instances and services within the Region is not impacted by the event" which is somewhat amusing in that they're saying so long as you don't need Internet access, everything is fine.
We've had to route all traffic away from the Australian region for edge messaging service, see https://status.ably.io/incidents/718