This document discusses strategic planning and information systems strategy. It covers topics like strategic planning, vision and business needs, Earl's grid, McFarlan's application portfolio, and business process reengineering. For McFarlan's application portfolio, it describes assessing existing, planned and potential IT systems based on their current and future importance to the business. It also discusses Earl's reasons for having an IT strategy and categorizing systems as high potential, strategic, key operational or support.