What is the main purpose of AWS Firewall Manager?

The main purpose of AWS Firewall Manager is to manage firewall rules across AWS accounts and applications. This service enables organizations to centrally configure and manage their firewall rules consistently across multiple accounts and resources within AWS. By using Firewall Manager, administrators can define security policies to regulate inbound and outbound traffic, apply rules uniformly across AWS Organization accounts, and ensure compliance with organizational standards.

Firewall Manager streamlines the process of managing firewalls by allowing for the centralized oversight of rules, reducing the complexity and potential for errors that can arise from managing firewall settings on an individual basis for multiple resources. This not only enhances security but also improves operational efficiency and ensures that the security posture remains consistent across different AWS accounts and applications.

The other options do not encapsulate the primary functionality of AWS Firewall Manager. While creating virtual networks, updating encryption keys, and monitoring network activity are all important aspects of network management and security, they are distinct from the specific role of Firewall Manager in managing firewall rules across an organization’s AWS environment.