abbas keramati - assistant professor, industrial engineering department,university of tehran,tehran,tehran iran
parham jafari moghadam fard - tarbiat modares university faculty of engineering/lulea university of technology deparment of industrial engineering/division of industerial marking and E-Commerce
navid mojir - industrial engineering department faculty of engineering university of tehran tehran iran

The relatoinship between information technology investments and firm value as an area of inquiry has sustained interest among is researchers over the past decade.based literature review of published work at corporate level productivity,researchers have developed three different approaches in assessing the correlation between IT implementation and productivity measures.Broadly speaking the first two approaches focus on the effects of IT investment on direct, intermediary, financial and non-finacial measures of productivity. none of these two aooroaches could positively prove eitcher a direct correlation or lack of such a relation. The third approach,"complementary" approach, considers the IT implementation but emplementation but emphasizes the role of complementary investment that enhance and complement the IT implementtion.Recently, some studies facous on process approach, which emphasized on evaluation of impact of information technologyies from process to process copabilities, and from capabilities to performance.

information technology,process framework,perfromance.IT complementary inter-organizational infrastucture