The difference between a VPN and a ZTNA lies in key concepts. A VPN is just the mechanism that redirects the users’ traffic through a VPN server, often the one maintained by a corporation. VPN does not provide any serious approach to security. ZTNA connects users directly to private applications, and provides detail and flexibility through adaptive security policies. ZTNA is a cloud security service that allows you to control the network connections from a remote position.