A broker is a knowledgeable professional who carries out transactions involving the buying and selling of currencies and related instruments. They work on a commission basis, acting as intermediaries between banks and bringing together buyers and sellers. In the foreign exchange market, brokers play a vital role in facilitating transactions and are often paid by the initiating party or by both buyers and sellers. Globally, there are several major brokers who operate through subsidiaries, affiliates, and partners in multiple countries. Their expertise and connections make them valuable players in the financial world.