General Vagrant doc page: Vagrant Share.
Vagrant Share allows you to share your Vagrant environment with anyone in the
world, enabling collaboration directly in your Vagrant environment in almost any
network environment with just a single command:
The Parallels provider supports two primary modes or features of Vagrant Share:
HTTP sharing will create a URL that you can give to anyone. This URL will route directly into your Vagrant environment. The person using this URL does not need Vagrant installed, so it can be shared with anyone. This is useful for testing webhooks or showing your work to clients, teammates, managers, etc.
SSH sharing will allow instant SSH access to your Vagrant environment by anyone by running
vagrant connect --sshon the remote side. This is useful for pair programming, debugging ops problems, etc.
Vagrant Share requires an account with HashiCorp's Atlas to be used.