In SD-Access Wireless, the control plane is centralized. This means that, as with Cisco Unified Wireless Network, a Control and Provisioning of Wireless Access Points (CAPWAP) tunnel is maintained between APs and WLC. The main difference is that in SDAccess Wireless, the data plane is distributed using a Virtual Extensible LAN (VXLAN) directly from the fabric-enabled APs. https://www.cisco.com/c/dam/en/us/td/docs/cloud-systems-management/network-automation- and-management/dna-center/deploy-guide/cisco-dna-center-sd-access-wl-dg.pdf