An Accounting Information System (AIS) is a technology-driven framework that collects, stores, processes, and reports financial and accounting data, enabling informed decision-making for internal management, investors, and creditors. Modern AIS uses software and IT to automate transactions, manage financial flows, and generate essential reports like balance sheets, improving efficiency, accuracy, and control over an organization's finances. Key components include people, procedures, data, software, IT infrastructure, and internal controls, all working to provide reliable financial insights.