Aggregate demand is the total amount of goods and services that consumers, businesses, and the government are willing to purchase at a given price level and within a specific period. It is an indicator of the overall health of the economy and is influenced by factors such as consumer spending, investment, government spending, and net exports. Aggregate demand is often represented by a downward-sloping curve that shows the relationship between the price level and the quantity of goods and services demanded in the economy. Changes in aggregate demand can have significant impacts on economic growth, employment, and inflation.