The overall set of factors that influence planning, scheduling and strategic production decisions which include type and timing of demand, product and process complexity, physical product form, logistics and vendor capabilities, and internal functional capabilities. Describing the overall environment often includes the response to demand (to stock or to order), physical facility layout (job shop, production line, cell, batch processing or other) and methods and requirements used in planning and scheduling (discrete, repetitive or process). Many companies have characteristics of more than one environment.