In the previous section, we looked at how to deploy an NSX Edge distributed logical router. Let's look at adding an NSX Edge Services Gateway (ESG). You can always deploy multiple NSX ESG virtual appliances. Each appliance is configured with interfaces and an edge appliance can have up to 10 virtual interfaces (uplink and internal). The internal interfaces act as gateways to all virtual machines in a port group, while the uplink interfaces can be connected to the outgoing network that can be your physical network.
Only the Enterprise administrator role that allows NSX operations and security management can deploy an ESG.