This essay provides a comprehensive analysis of four key competitive strategy models: SWOT Analysis, Generic Strategy, Ansoff Matrix, and Resource-Based View. The SWOT analysis examines the strengths, weaknesses, opportunities, and threats of a business, using Telstra as a case study. The generic strategy model explores cost leadership, differentiation, and focus strategies. The Ansoff Matrix outlines growth strategies through market penetration, market development, product development, and diversification. The resource-based view strategy assesses the link between internal characteristics and company performance, emphasizing valuable, rare, inimitable, and organization-wide supported resources. Each strategy is explained with practical applications and examples, providing a thorough understanding of competitive strategy development.