The document discusses the information system audit, which aims to evaluate the quality, effectiveness, and efficiency of a company's information systems. It does this through examining procedures, processes, technologies, data, and personnel to identify risks. The goals are to increase accountability, ensure best practices, understand system usage, assess strengths and weaknesses, and ensure reliability of financial reporting. It provides classifications of audits and outlines the required skills, areas, approaches, standards, concepts, tools, technologies, and documents involved in performing an information systems audit.