What it is www?
A web server that serves only static content, it can send traffic in plain
HTTP, or HTTPS by using a self signed certificate
localhost or using a valid
certificate by using letsencrypt.
Because of the need to share, test via HTTP/HTTPS the contents of a directory.
The idea came from the need to simplify this commands:
python -m SimpleHTTPServer
twistd -n web --path /foo/bar/baz