I am assuming that the research in this area is supported by two paradigms behavioral science and design science. My research objectives are the development of solutions to organizations, using action research, starting with a business analysis and making the decompositions of strategic formulation , like the scorecards, using business processes management approach. The improvement areas identified in the organization are solved using Information Systems initiatives.
The case studies are applied to several organizations and support the definition of an approach to a business sector. To have scientific value how many case studies should I do to define the approach generalization. And at the same time getting results not in a very long term?