The hierarchy of levels of strategy is like a nest in which one strategy covers another. Corporate strategies are supported by business strategies, which in turn are supported by functional strategies. Therefore, corporate level success cannot be achieved if the organization does not know how to succeed at the business level. Similarly, business level success cannot be achieved unless organization knows how to succeed at functional level. Business level strategy focuses on the concept of “competing” and it covers all functional areas of a business unit such as operations, marketing, logistics, research and development, etc.