Cryptocurrency Exchanges are like the traditional stock exchanges where buyers and sellers trade based on the current market price of cryptocurrency. Here, the exchange plays the middleman, as their platform facilitates the exchange between buyers and sellers. These types of crypto trading platforms generally charge a fee for each transaction. Some of these exchanges deal only in cryptocurrency. Other exchanges allow users to trade fiat currencies like the U.S. dollar for cryptocurrencies like Bitcoin. Some of these exchanges are derivatives platforms. Others just focus on spot trading, and some do both.