This lecture introduces the Distributed Information Systems course for the Fall Semester 2021, covering key concepts like web search engines, data mining, and data integration. It emphasizes the importance of understanding models and algorithms for information processing, with a focus on data science and practical tools. The course structure, exercises, and exam details are explained, along with the use of platforms like Moodle and Zoom for communication and assessment. The instructor will provide guidance on exam preparation and references to relevant textbooks.