The document outlines National Australia Bank's (NAB) cloud strategy and implementation. It discusses NAB's strategic context and drivers for cloud adoption, including aging legacy systems, innovation cycles, and enabling customers and employees. NAB's cloud strategy aims for a hybrid model with 90% of services in the cloud. The strategy addresses regulatory requirements, risk appetite, governance structures, and adapting practices for cloud. It also discusses NAB's participation in the Open Data Center Alliance (ODCA) to help inform its cloud approach and build internal capabilities for cloud adoption.