Outdoor room concept: Just like the interior of our homes, these outdoor spaces reflect our lifestyle, tastes and needs. Also just like our homes, they have specific functions. There are three main functions to a given outdoor space: the living area, public area and service area. These specific areas are often referred to as outdoor rooms. Thinking and planning in this way is known to landscape designers as the outdoor room concept. Composition is the same as the indoor room comprised of – Outdoor Wall – Outdoor floor – Outdoor Ceiling.