Two Types of Integration
"A vertically integrated firm is a firm in which all the activities take place in one firm but the separate activities are located around the world. For example, Exxon pumps its oil in different countries like Saudi Arabia, Venezuela, or Nigeria, but then refines it in places like Texas. A horizontally integrated firm Coca Cola will do the same activities but in each country, like Coca Cola has factories all over the world to produce their products."
(
Multinational corporations, visited 2008-05-28)
"A vertically integrated firm is one that carries out two or more stages of production or distribution by itself. For example, a firm that both produces and sells its own products is vertically integrated."
(High Beam Encyclopedia,
"We Control the Vertical": Three Theories of the Firm. (banking industry management theory and techniques), visited 2009-10-14)