Deploying VPN Connections by Using Windows Powershell and Group Policy
This article describes how to use Group Policy, Powershell and the Remote Access Service (RAS) application programming interfaces 
(APIs) to configure and deploy VPN connection settings to client computers ready for use by users. The solution also describes how the Task Scheduler service can be used to configure scripts or programs that are run whenever a VPN connection is made to the VPN server. The advantage of this solution is that it is not platform specific, and can be used on all of the currently supported versions of Windows.
This guide discusses one technique that can be used. Its primary purpose is to illustrate how a remote access connection can be created programmatically. Another technique often used is to use the Connection Manager Administration Kit (CMAK) to create a Connection Manager profile that can be deployed to your clients. For more information about CMAK, see Connection Manager Administration Kit (https://go.microsoft.com/fwlink/?linkid=55986) in the Windows Server Technical Library.
Amazing documentation for configuring & deploying VPN connections with the help of APIs available.