This essay discusses the use of development tools in strategic management, such as PESTEL analysis, SWOT analysis, five forces analysis, and generic strategy. It explores how these tools are utilized to analyze Apple Inc.'s business strategies. The PESTEL analysis identifies external factors that impact Apple's business practices, while the five forces analysis examines the competitive forces in the marketplace. The SWOT analysis evaluates Apple's strengths, weaknesses, opportunities, and threats, and the generic strategy analysis reveals that Apple utilizes a differentiation strategy. Overall, these tools help managers make informed strategic decisions.