Aruba is an industry leader. The hardware is on par, and its performance is also on par with anybody else. The Aruba brand really only focuses on wireless, so they're not competing their R&D for switching data center products and cloud security. They're really focused on that and their underlying key pieces.
They provide a role-based authentication that is native to the controller. A lot of other systems don't do that. They won't provide you the ability to basically have everybody join the network, regardless of whether or not they share the same network space, the SSID, or the wireless LAN. You can segment it down to a specific user role based on any kind of attributes that you like. That's their differentiator. If you need per user, per device, or per port segmentation, you can get that with Aruba. There isn't another vendor who does it.
