Patch management is a process that involves deploying code changes, or patches, to devices to fix, update, or upgrade their operating systems or software products. It helps prevent data breaches by fixing security vulnerabilities and ensures the performance and stability of operating systems and applications. Patch management is an essential part of Windows and Mac management, and its benefits include device and data security, compliance, and user experience. The process involves creating a patch management plan, deploying patches to devices, testing for compatibility, and ensuring that all patches have been installed successfully. Automated patch management with software solutions like Miradore can simplify the process, providing features such as automated detection, reporting, piloting, and deployment of patches.