You prepare your environment for Cloud Foundation by installing a baseline ESXi image on vSAN ReadyNodes. After the hosts are physically racked and cabled, Cloud Foundation uses the physical network details you provide (such as DNS, IP address pool, and so on) to automate the bring-up and configuration of the software stack. During bring-up, the management domain is created on the four hosts you specified. When the bring-up process completes, you have a functional management domain and can start provisioning VI workload domains.