You can remediate hosts against baselines that contain patches or extensions. Depending on the patch criteria you select, patch baselines can be either dynamic or fixed.
Dynamic patch baselines contain a set of patches, which updates automatically according to patch availability and the criteria that you specify. Fixed baselines contain only patches that you select, regardless of new patch downloads.
Extension baselines contain additional software modules for ESXi hosts. This additional software might be VMware software or third-party software. You can install additional modules by using extension baselines, and update the installed modules by using patch baselines.
If your vCenter Server system is connected to other vCenter Server systems by a common vCenter Single Sign-On domain, and you have more than one Update Manager instance, patch and extension baselines that you create are not applicable to all inventory objects managed by other vCenter Server systems. Baselines are specific for the Update Manager instance you select.
Ensure that you have the Manage Baseline privilege.