As the lead cloud architect for a start-up, you are deploying web applications on AWS. One of your services runs on an EC2 instance. Which of the following security responsibilities would fall under your purview?
Configuring network ACLs and security groups for the EC2 instance
Maintaining the hardware that the EC2 instance runs on
Upgrading the virtualization infrastructure on which the EC2 instance runs
Ensuring the physical security of the data centers where the EC2 servers are hosted