This academic paper introduces the resource-based view of sustained competitive advantage. It argues that differences in firms' resources and capabilities are key drivers of their success over time. The author defines critical concepts like firm resources, competitive advantage, and sustained competitive advantage. The paper explores conditions under which firm resources can lead to lasting advantages, such as value, rareness, inimitability, and non-substitutability. Ultimately, the work lays the theoretical groundwork for understanding how internal firm attributes contribute to long-term market leadership.