Cryptocurrency exchanges refer to online platforms where users can buy, sell and trade various digital currencies. These exchanges provide a marketplace for traders to exchange one cryptocurrency for another or to convert their cryptocurrencies into traditional fiat money. Cryptocurrency exchanges offer different order types such as limit orders, stop loss orders, and market orders, allowing users to execute trades based on their preferences. Some popular cryptocurrency exchanges include Binance, Coinbase, Kraken, Bitfinex, and Poloniex. These platforms provide a secure environment for trading digital currencies while also offering tools such as charts, news feeds, and research materials to help users make informed decisions about their trades.