> Look up “SAN” or “storage area network.” EBS looks like a regular, local block device, another disk in /dev, but is actually served over the network.

When I think of "SAN" I think of Fibre Channel, which can be quite fast. EBS sounds more like iSCSI.

Thank you for taking the time to let me know the keywords. I’m grateful for your kindness, and have a good day.