Vertically integrated corporations are businesses that control multiple steps in the production and distribution of a product or service. This could mean owning raw materials, factories, warehouses, shipping companies, and retail outlets – all the way down to sales. It allows them to have a higher degree of control over their supply chain, and potentially greater economies of scale. By vertically integrating, companies can reduce costs, increase efficiency, and even enter into new markets. These advantages can give them an edge over competitors who rely heavily on outsourcing.