I have a web service on address example.com and I add some functionality to it using completly separate web application set on different host. I want to set a subdomain another.example.com to open my new application. So by now I have two host providers and another one who maintain my domain.
I want another.example.com to be encrypted: https://another.example.com. So I need to buy a certificate and install it. What do I need to do? Where it should be installed? Which server should be configured to use it? My second host provider or that with domain? Do I need to reconfigure my domain?
Can someone explain it to me? I'm a little bit confused right now.