Yield management is the process of allocating capacity to maximize revenue. It originated in the airline industry due to deregulation. It includes variable pricing strategies, inventory strategies, management control, and multidisciplinary handling strategies. The key conditions for yield management are a fixed resource, perishable inventory, and customers willing to pay different prices. It is a branch of revenue management, which aligns prices and availability with customer segments. Hotels use similar strategies to calculate rates and inventory to maximize returns. The pros are flexible pricing and increased revenue, while the cons can be unfairness and opportunistic behavior from customers.