Which of the following best describes the customer's responsibility in the AWS shared responsibility model?
Constructing and maintaining the geographic distribution of Availability Zones
Developing and executing data center cooling strategies
Maintaining the core infrastructure that includes hardware, software, networking, and facilities
Managing the physical security of data centers
Security 'in' the cloud, such as network and firewall configuration, identity and access management, and encryption of application data
Ensuring the operational performance and reliability of cloud servers