HTTPS is the secure version of HTTP.
There is a growing move to https everywhere especially on locations that use passwords.

There should be some research with the hosting service to see what the
cost and impact is. It does take more work for the CPU to accept and deliver
https encrypted content.

As more browsers enforce or get grumpy about it more of the site users
will see browser notices that the site is not secure. Other than the password
step there is not a big worry for us but the move by the big boys to HTTPS
is relentless.

Our users need not see any issue. The server can serve both http and https.

https://www.eff.org/https-everywhere

What is the main difference between http and https?
Instead of HyperText Transfer Protocol (HTTP), this website uses HyperText Transfer Protocol Secure (HTTPS). Using HTTPS, the computers agree on a "secret code" between them, and then they scramble the messages using that "secret code" so that no one in between can read them. This keeps your information "safe" from hackers.

https://en.wikipedia.org/wiki/HTTPS
https://help.dreamhost.com/hc/en-us/...sting-overview

And yes I have been busy doing some web things more than honing so this seem important to me this second... ;-)
This is a finishing stone equivalent thing for the server and we know that
there are finishing stones and then there are finishing stones.