As a foundational branch of economics, microeconomics focuses on the economic behavior and decision-making of individual units, such as households, firms, and individuals. It analyzes how these agents interact within specific markets for goods and services, examining the forces of supply and demand that determine prices and quantities. Core concepts include consumer choice theory, production costs, and various market structures (e.g., perfect competition, monopoly), providing a bottom-up view of how resources are allocated in an economy.