What is meant by infrastructure? Explain the basic qualities of infrastructure

Infrastructure is basic physical and organisational structure needed for the operation of a society or enterprise. It provides supporting services in the main areas of industrial and agricultural produc- lion, domestic and foreign trade and commerce. Following are the qualities of infrastructure :
(i) Infrastructure is basis to all activities.
(ii) Infrastructure supplies basic inputs.
(iii) Infrastructure installations are used over a long period of time.