No, vCenter and VCSA are not different things. VCSA = vCenter Server Appliance
The VCSA offer different WebGUIs.
If you connect to https://vcsa:5480 this is named VAMI and is only for control of the linux based VM
- There is additional configuration needed
The vCenter starts at https://vcsa:443 and offer 2 different GUI tools
Flex (the old flash based and depricated) = WebClient
HTML5 (the new one) = vSphere Client
After choosing one and successfully login in you will see the vCenter Homepage with several icons in the center of the screen
- There is additional configuration neded
Regards
Joerg