A workload domain consists of VMware ESXi hosts managed by a single VMware vCenter Server instance, storage for workload data, and network equipment to connect to the data center.
Management Workload Domain
The management workload domain contains a single vSphere cluster called the management cluster. The management cluster hosts the VMs that manage the solution. This cluster is crucial for the management and monitoring of the solution.
Compute Workload Domain
The compute workload domain can contain multiple vSphere clusters. These clusters can contain a minimum of two ESXi hosts and a maximum of 96 or 64 hosts (when using vSAN), depending on the resource and availability requirements of the solution being deployed. For more information, see VMware Configuration Maximums.
The Edge cluster, which hosts NSX Edge VMs, is part of the compute workload domain. This cluster provides virtualized network services such as load balancers and the north-south routing infrastructure to support the workloads.
Each compute workload domain can support a maximum of 2500 ESXi hosts and 40,000 VMs. If you use other management and monitoring tools, the vCenter maximums do not apply and the actual number of ESXi hosts and VMs per workload domain might be less.