L2VPN: Layer 2 Virtual Private Network is a means of stretching logical networks across geographical locations or sites. The connection is secured through SSL encryption.

WAN: A Wide Area Network is a telecommunications network that spans a large geographical area.

VXLAN: Virtual Extensible LAN is an encapsulation protocol for extending Layer 2 networks over Layer 3 networks.

Trunk Port: An interface on the VMware NSX Edge™ device or standalone NSX Edge appliance that is configured to carry all VLAN/VXLAN traffic.

PSC: The VMware Platform Services Controller™ (PSC) refers to the core group of infrastructure services that are essential to the operations of VMware vCenter®. This group of services include VMware vCenter Single Sign-On™, license service, lookup service, and VMware Certificate Authority. For full details of PSC deployment models and configurations, see the VMware vSphere Installation and Setup documentation.

vCenter Single Sign-On: The service that facilitates secure authentication services to VMware vCenter Server® and other software components that make up the VMware vSphere® infrastructure.