Which AWS service or feature can the company associate with the EC2 instance to meet this requirement?

Explanations:

Network ACLs (Access Control Lists) control traffic at the subnet level, not directly associated with individual EC2 instances. They provide an additional layer of security but are not typically used for fine-grained control of instance traffic.

Security groups are stateful firewalls that can be directly associated with EC2 instances. They control inbound and outbound traffic for instances based on rules defined for specific protocols, ports, and source/destination IP addresses.

AWS WAF (Web Application Firewall) is designed to protect web applications by filtering and monitoring HTTP/S requests. It does not control general inbound and outbound traffic for EC2 instances but rather secures applications at the web layer.

VPC route tables determine how traffic is directed within a VPC and between subnets and the internet. They do not filter traffic like security groups and network ACLs, making them unsuitable for controlling inbound and outbound traffic for an EC2 instance.