The document discusses the Strategic Alignment Model (SAM) framework for aligning IT and business strategy. It describes how SAM is based on strategic fit between external and internal views, and functional integration between organizational and technology views. SAM includes four domains - business strategy, IT strategy, business infrastructure, and IT infrastructure. For alignment, three of the four domains must be aligned. The document also outlines four perspectives of SAM - strategy execution, technology potential, competitive potential, and service level. Each perspective defines different roles for top management and IS management. Case studies are provided for each perspective.