This publication is the result of a collaboration between the Faculty of Environmental Design at the Université de Montréal and the School of Architecture and Design at the Lebanese American University (LAU) and is part of exchange activities between the two institutions. The book includes in-depth studies based on an observation of academic experiments, projects, and especially the role of interior design. It covers various topics in the field of usages, new teaching methods and challenges for better approaches in the development of living environments. These texts also explore the methodologies proposed for the conservation of built heritage, sustainable development and information and communications technologies. The articles presented in this book allow the reader to compare experiences and to take stock not only of the tools at our disposal for teaching and practicing interior design, but also of the processes that define the discipline and the new challenges related to the requirements of sustainable development.