What is "demand-side"

The Demand side is a term used in economics to refer to a number of things:

• The demand element of a supply and demand partial equilibrium diagram, in microeconomics
• The aggregate demand in an economy, in macroeconomics
• Economic policy actions which are designed to affect aggregate demand.
• Demand-side learning referring to the incentive to learn how to use and modify free software as opposed to buying conventional software.

The term is also used broadly to distinguish supply-side economics from other schools, for instance New Keynesian economics.