The foreign exchange market is a global decentralized market for trading currencies. It includes the spot market, where currencies are bought and sold for immediate delivery, the forward market, where contracts guarantee future delivery of a currency, and the futures market, where standardized contracts are traded. In the wholesale interbank market, large banks trade currencies with each other. Individuals and smaller businesses engage in the retail forex market through online brokers. The forex market facilitates international trade and commerce by enabling currency exchange and conversion.