Virtual Private Network or VPN for short, is a secure way of remotely accessing a private network.
When you use a VPN, your connection to the internet is bounced around a number of different servers, so anyone watching in on will not be able to tell your location or any identifying information about your device.
Data is also encrypted between devices. This means only users at the start and end point can access the information being sent.
VPNs are commonly used for working away from the office, or for organisations with multiple offices to work as one unit, although many people use VPNs for privacy.