Gerontechnology, also called gerotechnology is an inter- and multidisciplinary academic as well as a professional field that combines various disciplines of gerontology and technology. Sustainability of an aging society depends upon our effectiveness in creating technological environments, including assistive technology and inclusive design, for innovative and independent living and social participation of older adults in any state of health, comfort as well as safety. In short, gerontechnology concerns matching technological environments to health, housing, mobility, communication, leisure, work and also the personality/individual dispositions of older people. Gerontechnology is most frequently identified as a subset of HealthTech and is -- since the 2010s -- more commonly referred to as AgeTech or Agetech in Europe and the United States. Research outcomes form the basis for designers, builders, engineers, manufacturers, and those in the health professions (nursing, medicine, gerontology, geriatrics, environmental psychology, developmental psychology, etc.), to provide an optimum living environment for the widest range of ages.