The contributions in this volume address the use of chat technology in counseling, training and education, public relations, and journalism from an interdisciplinary perspective. They discuss approaches and concepts from linguistic, communication, and social science chat research, present the current state and future prospects of specialized chat tools, and reflect on experiences with chat use in didactic and professional contexts. The focus is on the question of under what conceptual and technical preconditions the potentials of chat-based communication—such as time and cost efficiency, persistence of communication history, accessibility, and connectivity with other internet-based information and communication offerings—can be utilized effectively. The volume demonstrates that the use of chat in professional, educational, and media contexts can benefit when findings from linguistic, communication, and social science chat research are combined with practical experiences of chat use and leveraged for the (further) development of chat tools and application scenarios.