Third Party Hosting
A third party host is a host that is not Starfish.
GoDaddy, Bluehost, HostGator are examples of hosting companies.
Gaining access to their hosting
Getting account details can take time. There may be security checks that the developer needs to go through to gain access.
Each host has a slightly different setup
Some hosts are difficult, some are easy. They will all have some form of control panel.