is any attempt to bypass information asymmetry
by systematically amassing information
about prices and other features of goods on the market
. Shop bots are a commercial example of aggregation in action.
In biology the term is applied to fish, birds and insects and describes a gathering of animals of the same size and body orientation, often cruising in the same direction. See schooling.
In object-oriented programming, aggregation is a special form of association.
See also traffic aggregation in telecommunications.