We have built our site using the Multi-site option for our divisions. Do I need a single license or multiple? All of the additional domains are built as xyz.mysite.com?
Good question. It is possible to use one license key on the main site and manually update the other sites. If you want to have automatic updates on each of the additional domains, then you would want to have a license key for each. Does that answer your question? I can elaborate if needed.