This essay analyzes four key strategy development tools: SWOT analysis, PESTEL analysis, the Resource-Based View (RBV) model, and the Five Forces framework. The SWOT analysis is presented as a tool for evaluating internal strengths and weaknesses alongside external opportunities and threats, using BHP Billiton as an example. PESTEL analysis is discussed as a means of assessing political, economic, social, technological, legal, and environmental factors, with Wesfarmers Limited serving as an illustrative case. The RBV model is examined as a method for identifying and leveraging a company's unique resources, with Honda as an example. Finally, the Five Forces framework is explored as a tool for evaluating industry competitiveness, with Qantas Airways used as an example. The essay concludes by emphasizing the importance of these tools in formulating effective business strategies and adapting to the competitive environment.