The company structure is a method based on the modeling for analysis; planning, design, and management the information technique to promote process in order to take the right decision. Thus, the structure of the company's models must include information for each company in order to achieve cooperation between them and the exchange of information among its services, so the company structure need the support from several models, but the establishment of such models is expensive and without a fixed value. It is advisable to find models that support actually what to achieve, especially with the development of modern technology that pay the companies increasingly towards Web services exchange. To overcome these problems, we present a model based on serviceoriented, which allows the exchange of information and assembly services provided by different companies in a dynamic way taking into account the context of cooperation, and organize a coordinated and coherent services chain, thus provides a way to exchange information and interaction of commercial services between companies.