Cryptocurrency exchange is a website where you can buy, sell or exchange cryptocurrencies for other digital currencies or traditional currencies such as US dollars or Euros. For those who want to trade professionally and have access to fancy trading tools, you may need to use an exchange that requires you to verify your ID and open an account. If you only want to make occasional, live trades, there are also platforms you can use that don't require an account. There are currently a number of platforms to choose from, but not all exchanges are created equal.