Every website on the CCK platform gets a Free SSL certificate.
The certificates allow you to have a secure connection between your browser and the server.
This secure connection helps in the prevention of hacking and stealing customer information as the data is encrypted from the viewer's browser to the server.
All certificates are installed automatically and you don't have to do anything.
If your domain is connected correctly it might take up to 48 hours for SSLs to install onto a newly connected domain (In most cases it is within the day).