Strategic information systems (SIS) are information systems that are developed in response to corporate business initiative. They are intended to give competitive advantage to the organization. They may deliver a product or service that is at a lower cost, that is differentiated, that focuses on a particular market segment, or is innovative. Strategic information management (SIM) is a salient feature in the world of information technology (IT). In a nutshell, SIM helps businesses and organizations categorize, store, process and transfer the information they create and receive. It also offers tools for helping companies apply metrics and analytical tools to their information repositories, allowing them to recognize opportunities for growth and pinpoint ways to improve operational efficiency. Some of the key ideas of storefront writers are summarized. These include Michael E. Porter's Competitive Advantage and the Value Chain, Charles Wiseman’s Strategic Perspective View and the Strategic Planning Process, F. Warren McFarlan’s Competitive Strategy with examples of Information Service’s Roles, and Gregory Parson’s Information Technology Management at the industry-, firm-, and at the strategy level.

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