Who installs patches for the operating system in Windows hosting?
We install patches on your Windows server once a month when those are available, provided that you registered for the "Automatic OS Patches & Upgrades via WSUS (option available with Evolve and Value server, included in Perform"). Upgrades of the operating system to a newer version are not included in this Service Pack. Our support can do this for you (paying service).
Mind that you can also use the Windows Update function to keep your server updated yourself.