Cryptocurrency exchanges or digital currency exchanges (DCE) are businesses that allow customers to trade cryptocurrencies or digital currencies for other assets, such as conventional fiat money, or different digital currencies. They can be market makers that typically take the bid/ask spreads as transaction commissions for their services or simply charge fees as a matching platform.
DCEs may be brick-and-mortar businesses, exchanging traditional payment methods and digital currencies, or strictly online businesses, exchanging electronically transferred money and digital currencies.[3] Most digital currency exchanges operate outside of Western countries, avoiding regulatory oversight and complicating prosecutions, but DCEs often handle Western fiat currencies, sometimes maintaining bank accounts in several countries to facilitate deposits in various national currencies. They may accept credit card payments, wire transfers, postal money orders, cryptocurrency or other forms of payment in exchange for digital currencies. They can send cryptocurrency to your personal cryptocurrency wallet. Many can convert digital currency balances into anonymous prepaid cards which can be used to withdraw funds from ATMs worldwide.
Some digital currencies are backed by real-world commodities such as gold.