This report delves into the application of information systems within organizations, using Amazon.com as a case study. It explores the needs of various functional areas like marketing and customer service, highlighting the issues they face and the role of systems like CRM and MIS in addressing these challenges. The report compares and contrasts different information systems, examining their use in different functional areas and how they support management decision-making at both middle and top levels. It also identifies the key technical details of these systems and considers relevant business factors. Finally, the report addresses social and ethical issues associated with information system implementation, providing a comprehensive overview of the topic.