In her talk Sandra Häuplik-Meusburger gave an overview on the overarching concept of Habitability in Extreme Environment and highlight a selection of major overarching habitability issues which have been identified by experience and research to date. DI Dr.-Ing. Sandra Häuplik-Meusburger is an architect and researcher specializing in compact habitability design solutions for extreme environments. Based at TU Wien, she instructs and guides Space Architecture design studios at universities across Europe, the US, UAE, and China. She serves as the Academic Director for the Executive MBA in Space Architecture at TU Wien and the Science Academy’s Space course in Lower Austria. She is Academician at the International Academy of Astronautics (IAA), chair of the Space Architecture Technical Committee (SATC), and Vice Chair of the IAA History committee and the Space Habitats Committee of the IAF. She is the author of the books Architecture for Astronauts - An Activity Based Approach (Springer, 2011), Space Architecture Education for Engineers and Architects - Designing and Planning Beyond Earth (Springer, 2016, co-author O. Bannova) and Space Habitats and Habitability – Designing for Isolated and Confined Environments on Earth and in Space (Springer, 2021, co-author S. Bishop).