Hi. VPN's main competitor now is SDP - "software-defined network perimeter" or "black cloud". The fundamental difference is the provision of strictly limited access to the internal structure to the network participants. Whereas the VPN tunnel is actually open from the inside for all clients. The new approach significantly increases the level of security. Read more about this https://vpnprofy.com/sdp-vs-vpn/ and hopefully choose the right encryption technology.