Cryptocurrencies like Bitcoin, Ethereum, Stellar, etc., require exchanges to trade online. The cryptocurrency wallets only allow sending and receiving of cryptocurrencies, but cryptocurrency exchange platform allows trading of tokens in various forms like peer-to-peer or over the counter (OTC). Today, exchanges like Binance are doing more than $5 billion in weekly trade volume making this one of the most successful and profitable business models. If you would like to develop your own cryptocurrency exchange business, it requires huge expertise in terms of enterprise architecture, security, wallet management, trading engine etc. Also, it would be very expensive and time consuming.