The Australian Dollar (AUD) is the official currency of Australia and is used as a medium of exchange in financial markets and investments. It is also the fifth-most-traded currency in the world, making it a popular choice for investors. The AUD is a popular currency for commodity and forex traders, as it is closely linked to the prices of commodities such as gold and oil. It is also used in international trade and investments, as it is the second-most-used currency for international transactions. The AUD is also attractive to investors due to its low interest rates and relative stability compared to other currencies. This makes it a desirable currency for investments, as it can provide a safe-haven for investors in times of market volatility.