The Microsoft Deployment Toolkit (MDT) is a free tool from Microsoft designed to simplify the deployment of Windows operating systems and applications. It provides a unified platform for managing the deployment process, allowing IT professionals to create customized installation images and automate the setup of new computers. MDT supports various deployment scenarios, including bare-metal installations and upgrades. It integrates with other Microsoft technologies, such as Windows Deployment Services (WDS) and System Center Configuration Manager (SCCM), to enhance the deployment experience. This toolkit is particularly useful for organizations looking to streamline their IT operations and improve efficiency.