This book explores the role of information systems in shaping and supporting corporate strategy. Written by Guy Jacob, it provides a foundational understanding of how data infrastructure, technology deployment, and information management align with organizational goals. Aimed at business professionals and students, the text bridges technical IT concepts and strategic decision-making, offering insights into optimizing enterprise performance through intelligent use of information resources. Originally published in French in 1993, it remains a relevant reference for those studying the intersection of technology and business leadership.