This document discusses strategies for diversifying a company into related and unrelated businesses. It defines related diversification as diversifying into businesses with value chains that have strategic fits with the company's existing businesses. This allows the company to leverage expertise, technologies, distribution networks, and other resources across the businesses. Related diversification can result in lower costs and stronger competitive capabilities compared to competitors. The document outlines various types of strategic fits that can exist across value chains, such as R&D, supply chain, manufacturing, distribution, sales and marketing, and managerial fits. Capturing these strategic fits is said to create a "1+1=3" effect where the performance of the combined businesses is greater than if they operated independently.