delatech is midsized company that does technology consulting. it has 2 administrators: bob and mary. it also has a technology manager, aj. bob and mary need to have access to all functions of the system, while aj only needs to inspect their work. delatech wants to create a website that will include a load balancer that sits in front of an auto-scaling group. the ec2 instances in the auto-scaling group need to have access to a network drive (an efs store) that isn't accessible to anyone else. the ec2 instances need to be accessible via ssh. what are the security needs of this configuration