Windows Server Update Services (WSUS) is a Microsoft patch management solution designed to centrally manage, approve and distribute software updates, security patches and system upgrades across Windows-based infrastructures. It enables organizations to control which updates are deployed, when they are applied, and how they are validated across different environments.

In industrial and segmented networks, WSUS plays a critical role in maintaining system security and compliance. By managing both update packages and associated metadata, it ensures consistency between IT policies and deployed systems — while supporting controlled and auditable patch distribution workflows.