BNB is the native asset of BNB Chain and a core token in the broader Binance ecosystem. It is used for transaction fees, on-chain applications, exchange-related utility and token burns that aim to reduce circulating supply over time.
The BNB price in AUD tends to reflect exchange activity, BNB Chain usage, launchpad demand and the market's view of Binance ecosystem risk. Because BNB links trading infrastructure with smart contract activity, it is commonly compared with both exchange tokens and layer 1 assets.