BNB, short for Binance Coin, is the native cryptocurrency of the Binance ecosystem, one of the world's largest cryptocurrency exchanges, having been launched in 2017. Originally built on the Ethereum blockchain as an ERC-20 token, BNB later migrated to its own blockchain, the Binance Chain, and more recently expanded into the Binance Smart Chain (BSC), now part of the BNB Chain ecosystem. BNB was initially created as a utility token to offer users discounted trading fees on the Binance exchange but has evolved beyond this primary use. It is an integral component within Binance's ever-expanding suite of services, including decentralised finance (DeFi) applications, token launches, and financial products. With a capped supply and quarterly burn events, BNB aims to drive value through scarcity. Its growing adoption reflects Binance's ambition to extend cryptocurrency's reach into numerous financial and non-financial systems, underscoring its utility and expanding role.