cost saving(An action that will result in fulfillment of the objectives of a purchase, at a cost lower than the historical cost or the projected cost. BD Alexander Demidov)
economy of scope(Economies of scope are conceptually similar to economies of scale. Whereas economies of scale for a firm primarily refers to reductions in the average cost (cost per unit) associated with increasing the scale of production for a single product type, economies of scope refers to lowering the average cost for a firm in producing two or more products. (Wikipedia) Moscowtran)