An engineer must design a VPN solution that meet these requirements: internet connections to the cloud creates a private tunnel for direct communication between corporate sites encrypts the tunnels…

SSL VPN uses TLS rather than IPsec for encryption and is designed for remote-access client connectivity, not private site-to-site tunneling.

GET VPN requires a private MPLS network as its transport and relies on a Key Server; it does not operate over internet connections.

WebVPN is a clientless browser-based remote-access solution secured with SSL/TLS and is not designed for site-to-site private encrypted tunnels between corporate locations.

DMVPN uses a public internet connection as its underlay transport and builds private site-to-site tunnels using multipoint GRE (mGRE) combined with NHRP for dynamic spoke discovery. IPsec is applied as an IPsec profile directly on the tunnel interface, satisfying the encryption requirement - making DMVPN the single technology that fulfills all three stated requirements simultaneously.