This guide serves as a comprehensive resource for deploying Duo, detailing the essential stages and best practices for a successful implementation. It outlines the key phases of deployment, including success planning, application configuration, testing, and end-user communication. The document emphasizes the importance of strategic planning and provides a deployment timeline that can act as a blueprint for organizations. It includes best practices for managing Duo administrators, configuring applications, and ensuring effective communication with end-users. Additionally, the guide highlights the significance of testing applications in a non-production environment to identify potential issues before the full rollout. It is designed for security managers, IT project managers, and security administrators responsible for deploying Duo across various editions. The guide aims to facilitate a smooth deployment process by offering practical advice and resources tailored to the needs of the organization.