The EASServer is an out-of-process COM server that requires Local launch and Local activation permissions. It also needs Local access permissions. It does not require any Configuration Permissions. The AuthManagers are also COM objects; however, they are in-process COM objects (DLL's) and thus don't need to go through this change.
The EFT Server service cannot start the EASServer; it does not have appropriate access rights. The EFT Server service needs access to read the registry and read the files on the file system, so the permissions must be set accordingly.