According to the AWS shared responsibility model, which of the following maintenance tasks is the customer's responsibility?

The shared responsibility model dictates that AWS is responsible for security of the cloud, while the customer is responsible for security in the cloud. AWS manages the underlying infrastructure, including physical connectivity, network switches, and hardware updates/firmware patches. These fall under AWS's "security of the cloud" responsibility. Customers are responsible for managing their operating systems, applications, and data. Applying updates and security patches to Amazon EC2 instances, which are customer-managed virtual servers, is therefore a customer responsibility as part of "security in the cloud.