Both. Vagrant creates a virtualbox vm and does the appropriate networking bits to let you ssh into it easily. Even does portforwarding so you can easily reach w

Both. Vagrant creates a virtualbox vm and does the appropriate networking bits to let you ssh into it easily. Even does portforwarding so you can easily reach webservers on the vm on an easy to remember port # from the host (ie localhost:8080 is vm1, localhost:8081 is vm2, etc)