What does Aurora token do?

As a seasoned observer in the world of cryptocurrencies and finance, I'm curious to understand the function and value proposition of Aurora tokens. Could you elaborate on the key use cases of Aurora tokens? Are they designed to serve as a utility token, enabling access to specific services or features within the Aurora ecosystem? Or are they a form of payment, facilitating transactions between participants in the Aurora network? Furthermore, how does the Aurora token contribute to the overall health and sustainability of the Aurora ecosystem? Understanding these aspects would help me assess the potential value and role of Aurora tokens in the broader crypto landscape.