This document discusses analyzing a firm's internal organization. It begins by explaining the importance of resources, capabilities, and core competencies in developing competitive advantages. Resources alone do not provide advantages; firms use resources to form capabilities, some of which become core competencies. The document then discusses four criteria for determining if capabilities are core competencies: value, rareness, imitability, and substitutability. Firms must effectively manage current core competencies while developing new ones to remain competitive. The relationship between analyzing opportunities in the external environment and a firm's internal strengths and weaknesses is also discussed.