For anything outside your LAN, 2 nodes must need a negotiator(over internet) to know each other unless the nodes already have public dedicated IPs in which case they can talk to each other securely without the need of a negotiator.
Because of exorbitant price set by the registry. After the apps boom, domain name has lost half of it’s value. And, rest was messed up by the new TLDs.
I strongly believe if there was original gTLDs and ccTLDs, internet would be a better place.
Did you see the last reply on the thread you linked. The guy messed up ENV variable in borg and was doing too many account backups as new archives killing the cache when the same account was backed up next day. Borg will always be faster than rsync while doing incremental backups, but of course has a learning curve coming from the simplicity of rsync.
For anything outside your LAN, 2 nodes must need a negotiator(over internet) to know each other unless the nodes already have public dedicated IPs in which case they can talk to each other securely without the need of a negotiator.