Definition of Terms
      
      
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        Definition of Terms
      
      
        Integrated IT Systems
      
      
        An integrated IT system refers to an architecture in a company, which is built upon
      
      
        the prerequisite of enabling and maintaining an integrated information flow
      
      
        throughout the company, covering all departments. Hence the proper information is
      
      
        available to the right person or department, whenever or wherever demanded, in
      
      
        the quantity and quality required. This flow of information is enabled on two levels:
      
      
        on a physical integration level and an interoperability level. The physical layer
      
      
        comprises the hardware structure itself, like for example client PCs, servers, or
      
      
        routers. Interoperability refers to the functional interaction between the software, and
      
      
        applications running on this hardware (Bernus, Mertins, & Schmidt, 2006, pp. 2-4).
      
      
        ERP Systems
      
      
        ERP is an abbreviation for Enterprise Resource Planning and denotes an integrated
      
      
        IT-system for companies. Based on a common database available to all
      
      
        departments within a firm, different modules like Finance, Marketing or Logistics
      
      
        offer tailor-made interfaces for each department (Götz & Hesseler, 2007, p. 5).
      
      
        The great advantage from using such an integrated system within a company’s
      
      
        network derives from the fact that redundancies can be avoided by providing the
      
      
        same data to all departments and business units. Usually ERP systems are
      
      
        customized to the special needs of a company or industry and can be expanded by
      
      
        adding new modules.