Per the comment below using Cloudfront for "secure, performant egress from S3", are there any other solutions that immediately come to mind? Working in Shangha

Per the comment below using Cloudfront for "secure, performant egress from S3", are there any other solutions that immediately come to mind? Working in Shanghai and AWS Beijing doesn't have Cloudfront as a service; separately, everything has to be kept in-country due to regulatory reasons. Ultimately I am looking for non-expiring links to password protected private folders (low volume) to serve to clients which I believe don't exist. A little out of my element SysOps wise; using the excellent SteveLTN https-portal docker image found on GH wrapped around JWilder's Nginx-proxy with some Flask, Mongodb, Redis thrown in the mix (hopefully someday soon). TIA.