Microeconomics
The branch of economics that studies how individual households, firms, and markets make decisions about allocating scarce resources and setting prices.
What is Microeconomics?
Microeconomics analyzes the behavior of individual economic agents — consumers, firms, and industries — and how they interact through markets to determine prices and quantities. Its central questions include: how do consumers maximize utility given budget constraints? How do firms minimize costs and maximize profit? How do supply and demand interact to reach equilibrium prices? What are the effects of taxes, subsidies, price controls, and market power on welfare? Core concepts include supply and demand, price elasticity, marginal cost, marginal utility, producer and consumer surplus, market structures (perfect competition, monopoly, oligopoly), game theory, and externalities. Microeconomics underpins corporate strategy, pricing decisions, regulatory analysis, and antitrust law. It contrasts with macroeconomics, which studies economy-wide phenomena like GDP, inflation, and monetary policy. The two fields are connected: aggregate macroeconomic outcomes emerge from millions of micro-level decisions.
Example
A pharmaceutical company uses microeconomic analysis to set the price of a new drug. It estimates the price elasticity of demand (how much quantity demanded changes with price), models competitive substitutes, considers insurance coverage and payer negotiations, and applies cost-benefit reasoning about R&D recovery. The resulting pricing decision — a classic microeconomic optimization problem — affects the quantity of patients treated, the firm's profits, and the welfare of consumers and society.
Source: Investopedia — Microeconomics