Porter's Five Forces Analysis examines the competitive pressures that shape an industry. It looks at five external forces: the threat of new entrants, the bargaining power of suppliers, the threat of substitutes, the bargaining power of buyers, and rivalry among existing competitors. Each force influences how easy or hard it is for firms to earn profits in that industry. For example, if barriers to entry are low, new rivals can flood the market and push prices down; powerful suppliers can push up costs; readily available substitutes can cap price levels; powerful buyers can demand better terms; and intense rivalry among firms can lead to price wars and reduced margins. Together, these forces determine the overall attractiveness of an industry and help guide strategic choices about where to compete and how to position a firm. Other frameworks focus on different angles. VRIO analysis is about a company’s internal resources and whether they provide lasting advantages. The strategy diamond analyzes where, how, and with whom a firm competes, plus the sequence and logic of those choices. Realized strategy looks at what the firm actually does in practice, as opposed to what it planned. The five-forces lens specifically targets external competitive pressures in the industry.