In this video, AWS Solutions Architect Fennel Patel provides an introduction to AWS Firewall Manager, a centralized security management service. Patel explains the prerequisites for using Firewall Manager, including enabling AWS Organizations, AWS Config, and designating a Firewall Manager administrator account. He demonstrates how to set up these prerequisites in the AWS console and outlines the key features of Firewall Manager, such as centralized policy configuration for various security services and the ability to automatically remediate non-compliant resources.