LiveCycle ES needs to be installed on a application server like Jboss or websphere.
In the installer you choose what server components you want to install.
After that you (or the turnkey installer) start the configuration manager. You can allways start this manually later to do any configuration you need.
In the end you have some ear files (or war files for webpshere) and they can be deployd on you application server.
The ear files in the Jboss\server\all\deploy folder will be deployed when you start the jboss server.
You can do the config on another server but the Adobe software runs on Jboss.
So you need OS, Database, Application server (that runs LC ES)