Objekt Adaptor
    Provides some main services, as aktivating and deaktivating remote objects
    Provides registration of remote objects
    Provides an identity for an instance of an implemented remote object
    Passes on messages to the remote objects
  
Interface Repository
    Contains the interface definitions of corba objects
    Provides these metadata at run-time 

Naming Service
    The Telefone-white-book of Corba
    Registrates object references in a naming-tree, a hierarchical structure similiar to a file system (in which contexts correspond to folders and object references to files)