Parler is a centralized entity, single account like. Whatever relays hosted on AWS are going to be by different entities. And in general people would be quite foolish to host big relays on AWS as the network costs would be rediculous. There are plenty of data centers globally for different VPS providers.
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Yep. Mine is located with Hetzner. I have active accounts with Oracle and Linode just in case, and regular backups.
In a few months I’ll have fiber in the homelab and will be able to roll over to my home server during outages and still offer fairly fast service.
for sure. But there are really only a handful of large/significant relays to be v disruptive