In this chapter, we discussed the downloading of patches into the Update Manager repository and retrieving the patches in this repository. You saw how to use baselines and test inventory objects for compliance with these baselines. You also learned to retrieve baseline compliance data and initialize the staging of patches to ESXi hosts for faster remediation. We used the vSphere Update Manager to upgrade or update your ESXi hosts with the latest patches. You also saw how to update the VMware Tools inside your virtual machines and upgrade the hardware version of your virtual machines.