I already have Jira Software installed on a server. I read it's best to install Jira Service Desk on the same server. When I went to install Jira Service Desk, it asks me to perform an upgrade. I am confused by this because Confluence and Bitbucket didn't ask me to do this, it was a clean install and they all had their own directory.
If Jira Service Desk is asking for me to perform an upgrade by default instead of an install, does it mean that Jira Service Desk will share install file paths with Jira Softwre? Is Service Desk just an extra web page inside Jira or does it have its own website and URL port as well?