This lecture provides an overview of the course on information systems, focusing on the definition and significance of information systems in today's digital landscape. The instructor begins by discussing the course structure and objectives, emphasizing the importance of understanding both traditional and modern methods of information management. A key question posed is, "What is an information system?" The instructor explains that information systems are integral to managing data and making informed decisions. The lecture highlights the evolution of information systems, particularly in light of advancements like large language models, and stresses the need to grasp foundational principles that remain relevant despite technological changes. The instructor also outlines the course's practical components, including projects that will allow students to apply their knowledge to real-world problems. The discussion touches on various types of data, the role of models, and the importance of data management and evaluation in the context of information systems, setting the stage for deeper exploration throughout the semester.