Vertical integration is a strategy where a company gains control over suppliers or distributors in its industry's value chain. There are two main types: backward integration, where a company takes control of suppliers, and forward integration, where it takes control of distributors. A company considers vertical integration when the costs of making or distributing internally are lower than market costs, and if the new activities fit with its competencies. The strategy can reduce costs and improve quality and coordination, but may also increase bureaucracy, reduce flexibility, and risk antitrust issues if the company becomes a monopoly. Alternatives with less investment and control, like contracts, may sometimes be better options.