VMware vCloud Director Extender is a product that creates a hybrid cloud between an end-user data center and a multi-tenant cloud based on vCloud Director.
vCloud Director Extender is designed to provide enterprise customers with the possibility of connecting their on-premise data center to a multi-tenant cloud environment based on vCloud Director. It provides a secure platform that ensures a seamless migration of on-premise workloads and extension of virtual networks to the cloud.
The L2 extension feature makes it possible to extend on-premise networks to cloud and deploy parts of the application on the same cloud subnet. It provides virtual machine mobility in scenarios such as hybrid cloud and phase migration between cloud provider and tenant sites. With L2 VPN extension, you do not have to reconfigure the applications, for example change their IP addresses, during failover. You can install and configure vCloud Director Extender both on tenant vCenter Server and on vCloud Director for Service Provider deployment.