This is a strange use of the word "edge". Especially because, as others here have noted, it doesn't include a clear indication of the "core", aside from maybe l

This is a strange use of the word "edge". Especially because, as others here have noted, it doesn't include a clear indication of the "core", aside from maybe large datacenters. The older usages of "edge" are from the networking world, where infrastructure and technologies have a relatively sharp distinction between "core/backbone/trunk networking" (large trunk lines, intercontinental fiber links, etc.) and "edge networking" (last-mile telco infrastructure, routers handling one building or campus of a company, etc) From this networking perspective, both the end-users local device and the centrally-hosted server are at the edge, though AWS will have more reliable and lower-latency connections to the internet core than your cell phone.