Earlier this month, Microsoft released a few patch-management tools to help ease the process of fixing flaws in their software. The two tools, Windows Server Update Services (or WSUS) and Microsoft Update, were made available on Monday, June 7.

Microsoft Update is designed to replace the current Windows Update and Office Update services. MU will serve as a single service for receiving patches for a number of Microsoft products, not just Windows.

WSUS, on the other hand, is Microsoft’s no-charge patch management tool for administrators. This tool replaces Software Update Services (SUS) by including improvements in patch delivery, status reporting, and network usage. WSUS looks for patches for the Windows operating system, Office, SQL Server, MSDE, and Exchange — all at once.