For what it's worth, you can get "S3 compatible" solutions for your local/colo'd hardware through Ceph or Minio - and I use S3 on my homeserver because it's suc

For what it's worth, you can get "S3 compatible" solutions for your local/colo'd hardware through Ceph or Minio - and I use S3 on my homeserver because it's such a robust and well supported protocol in a lot of apps that don't support ssh/syncthing.