CeBIT was a computer expo which, at its peak, was the largest and most internationally representative. The trade fair was held each year on the Hanover fairground, the world's largest fairground, in Hanover, Germany. In its day, it was considered a barometer of current trends and a measure of the state of the art in information technology. It was organized by Deutsche Messe AG.

A trade show, also known as trade fair, trade exhibition, or trade exposition, is an exhibition organized so that companies in a specific industry can showcase and demonstrate their latest products and services, meet with industry partners and customers, study activities of rivals, and examine recent market trends and opportunities.