This document provides an overview of chapter 1 from a textbook on management information systems. It discusses how information systems are essential for business today and defines an information system. It also outlines several key ways that businesses use information systems, such as for operational excellence, new products/services, customer intimacy, improved decision making, competitive advantage, and survival. The chapter discusses how information systems help achieve strategic business objectives and provides examples from companies like Walmart, Apple, and Verizon. It emphasizes the growing interdependence between businesses and information technology.