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What are WSUS (Windows Server Update Services) and its importance?

Answer»

WSUS (WINDOWS Server Update Services) is a tool that lets IT administrators deploy Microsoft product updates. You can manage the distribution of updates released from Microsoft Update to computers on your network using WSUS. SCCM is Microsoft's patch management solution and relies on WSUS to obtain and APPLY patches, but offers a number of more desirable features and allows users to control just how patches are installed/deployed. 

A WSUS server handles the management and distribution of updates through a management console. Also, WSUS servers can serve as update sources for other WSUS servers in an organization. WSUS servers that ACT as update sources are known as UPSTREAM servers. In WSUS implementations, at least one WSUS server needs to be able to connect to Microsoft Update in order to obtain updated information if available. 



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