Which AWS service should the company use to meet these requirements?

Explanations:

AWS Identity and Access Management (IAM) is primarily used for managing access to AWS resources by creating users, roles, and permissions. It does not specifically focus on identifying threats or protecting applications from malicious network access.

Amazon QuickSight is a business intelligence service that allows users to create visualizations and perform data analysis. It is not designed for threat identification or network protection, thus it does not meet the company’s requirements.

AWS WAF (Web Application Firewall) is designed to protect web applications from common web exploits and malicious network traffic. It allows users to create rules to identify and block threats, making it the appropriate choice for the company’s needs in protecting applications from malicious access.

Amazon Detective is used for analyzing security data and investigating potential security incidents. While it helps in threat detection and response, it does not directly configure rules to protect applications from malicious network access like AWS WAF does.