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In microeconomics and management, ''vertical integration'' is an arrangement in which the supply chain of a company is owned by that company. Usually each member of the supply chain produces a different product or (market-specific) service, and the products combine to satisfy a common need. It is contrasted with horizontal integration, wherein a company produces several items which are related to one-another. Vertical integration has also described management styles that bring large portions of the supply chain not only under a common ownership, but also into one corporation (as in the 1920s when the Ford River Rouge Complex began making much of its own steel rather than buying it from suppliers). Vertical integration is one method of avoiding the hold-up problem. A monopoly produced through vertical integration is called a vertical monopoly. Nineteenth-century steel tycoon Andrew Carnegie's example in the use of vertical integration led others to use the system to promote financial growth and efficiency in their businesses. Vertical integration can be a highly important strategy, but it is notoriously difficult to implement successfully and—when it turns out to be the wrong strategy—costly to fix. ==Three types== Vertical integration is the degree to which a firm owns its upstream suppliers and its downstream buyers. Contrary to horizontal integration, which is a consolidation of many firms that handle the same part of the production process, vertical integration is typified by one firm engaged in different parts of production (e.g., growing raw materials, manufacturing, transporting, marketing, and/or retailing). There are three varieties: backward (upstream) vertical integration, forward (downstream) vertical integration, and balanced (both upstream and downstream) vertical integration. *A company exhibits backward vertical integration when it controls subsidiaries that produce some of the inputs used in the production of its products. For example, an automobile company may own a tire company, a glass company, and a metal company. Control of these three subsidiaries is intended to create a stable supply of inputs and ensure a consistent quality in their final product. It was the main business approach of Ford and other car companies in the 1920s, who sought to minimize costs by integrating the production of cars and car parts as exemplified in the Ford River Rouge Complex. *A company tends toward forward vertical integration when it controls distribution centers and retailers where its products are sold. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「vertical integration」の詳細全文を読む スポンサード リンク
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