An Authorization Server is a system that manages the process of granting access to resources in a secure manner. It verifies the identity of users or applications and issues tokens that allow them to access specific resources without needing to share sensitive credentials. This is commonly used in scenarios involving APIs and web applications. The server typically implements protocols like OAuth 2.0 or OpenID Connect to facilitate secure authorization. By using an authorization server, organizations can enhance security, streamline user access, and maintain better control over who can access their resources and data.