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Persuasive evidence has described the strategic use of information technology in organizations. Also, Large investments in information technology (IT) and information systems (IS) have increased the need for successful IS/IT strategic planning (IT/ISSP). Despite the growing number of strategic IS/IT planning frameworks having been proposed, organizations still fail to successful implementing of IT/ISSP. Most importantly, numerous IS/IT strategic planning frameworks do not seem to realize that problems in this area are not merely technological, but are also caused by neglecting the interrelationship between IS/IT and organizational factors. This research attempt to identify the key mechanisms (with organizational approach) related to success in IS/IT strategic planning and propose a model for organizational readiness assessment for conduct Information Systems/ Information Technology strategic planning successfully. In this research, we use the structural equation method to model the relationship among the underlying factors