This document discusses corporate strategy and diversification strategy. It defines corporate strategy as determining what businesses an organization will compete in and how to allocate resources. The document outlines different levels of strategy and describes four approaches to corporate strategy: exit, expand, enhance, and extend. It then focuses on diversification strategy, discussing its purpose of entering new markets and forms such as horizontal, vertical, concentric, and conglomerate diversification. The advantages and disadvantages of diversification are also summarized.