Refer to the exhibit. An enterprise has offices spread around the globe. The APs are connected to different controllers installed in separate datacenters. The I...

Refer to the exhibit. An enterprise has offices spread around the globe. The APs are connected to different controllers installed in separate datacenters. The IT team wants to allow clients to roam from controllers in group ABC to controllers in group XYZ. Which feature must be incorporated in the design to accomplish this task?