$BTC A cryptocurrency exchange is a platform where you can buy, sell, and trade cryptocurrencies. Examples include:

1. Binance

2. Coinbase

3. Kraken

4. KuCoin

These exchanges allow users to:

1. Buy and sell cryptocurrencies

2. Exchange different cryptocurrencies

3. Store cryptocurrencies in wallets

When choosing an exchange, consider factors such as:

1. Security

2. Fees

3. Liquidity

4. User interface

5. Supported cryptocurrencies