This document summarizes key considerations for cloud computing security in government. It discusses: 1) The current international landscape of government cloud adoption and differences between US and other countries due to jurisdictional issues. 2) The status of cloud adoption in Australia and opportunities for better integration between data center and cloud strategies. 3) The security and risk profiles of different cloud models and their relevance for governments. 4) Key risk considerations for governments moving to the cloud, including identity management, concentration of risk, legacy system integration, and staff/network security. It argues for a hybrid cloud model to balance benefits and risks.