BNB (Binance Coin) is a cryptocurrency that was launched in 2017 by the Binance cryptocurrency exchange. It is based on the Ethereum blockchain, but with some modifications to enable faster transaction processing and lower fees.

BNB is used primarily as a utility token on the Binance platform, which is one of the largest cryptocurrency exchanges in the world. Users can use BNB to pay for trading fees, listing fees, and other services offered by the Binance exchange.

BNB has gained popularity due to its numerous use cases on the Binance platform and its increasing adoption by other crypto exchanges and merchants. The Binance exchange also offers incentives for users to hold BNB, such as discounts on trading fees and participation in exclusive token sales.

Overall, BNB has become a widely used cryptocurrency and is considered one of the top utility tokens in the market. However, like all cryptocurrencies, its value can be volatile, and it's important to do your own research and understand the potential risks involved before investing in BNB or any other cryptocurrency.