The document discusses how Creative Commons (CC) licenses have enabled open access to public sector materials in Australia. It provides a chronology of how CC licensing was adopted for public sector information (PSI) in Australia from the 2000s onward. Key reports and policies recommended adopting CC licenses as the default for PSI to promote access, reuse, and commercial exploitation of taxpayer-funded research and content. Many Australian government agencies have since implemented open access policies using CC licenses for budgets, geoscience data, and other materials.