Which benefit does DMVPN provide over GETVPN?

Both DMVPN and GETVPN support QoS, multicast, and routing protocols; this statement is factually incorrect about GETVPN's limitations.

DMVPN is tunnel-based (mGRE over IPsec), while GETVPN encrypts the original IP packet payload, maintaining the original IP headers, which is sometimes referred to as 'tunnel-less' in comparison to traditional tunnels.

Both DMVPN and GETVPN are IP-based VPN technologies and primarily support IP protocols within their encrypted sessions.

DMVPN (Dynamic Multipoint VPN) utilizes IPsec over mGRE tunnels to create secure VPNs across the public Internet, allowing spokes to dynamically build tunnels to a hub or directly to other spokes. GETVPN (Group Encrypted Transport VPN), in contrast, relies on a trusted underlying private network (like an MPLS VPN or a private IP network) to carry encrypted traffic, assuming that the routing infrastructure itself is secure and only encrypting the data payload without tunneling the IP header.