Strategic analysis is a domain in which human expertise and experience are key factors. This is the reason that attempts have been made to automate the strategic analysis by expert systems. This article means to capture the expert knowledge to be used in an expert system with the focus on an object-oriented model of the domain. Based on this OO model an expert system can be developed that is able to analyze a corporate enterprise with several Strategic Business Units each of which carrying more than one product at a time. Such an expert system would be able to analyze the various synergetic aspects.