It is learnt that a Cryptocurrency exchange or DCE short for digital currency exchange is a popular service/platform that enables clients to trade cryptocurrencies for other resources, such as other cryptocurrencies, standard FIAT cash or other digital currencies.
Primarily they allow trading one cryptocurrency for another, the buying and selling of coins, and exchanging FIAT into crypto. There are different crypto exchanges may have different options and features. Generally some are made for traders and others for fast cryptocurrency exchanges.