Group Policy is a feature in the Microsoft Windows operating system that allows administrators to manage and configure settings for users and computers within a network. It provides a centralized way to enforce security settings, software installations, and user permissions, ensuring consistency across all devices in an organization. By using Group Policy Objects (GPOs), administrators can apply specific policies to different groups of users or computers. This helps streamline management tasks and enhances security by controlling access to resources and settings, making it easier to maintain a secure and efficient computing environment.