How is aggregate demand related to individual demand?

Aggregate demand represents the total demand for goods and services in an economy at a given overall price level and time period, while individual demand refers to the demand for goods and services by a single consumer or household. Aggregate demand is essentially the sum of all individual demands across different consumers in the market. Changes in individual demand—due to factors like income, preferences, or prices—collectively influence aggregate demand, illustrating how microeconomic behaviors can impact macroeconomic outcomes.