A virtual private network (VPN) is a secure connection between a computing device and a computer network, or between two networks, using an insecure communication medium such as the public Internet. VPNs encrypt the connection between the device and the internet, creating a private tunnel for data and communications while using public networks. This ensures that sensitive data is safely transmitted and prevents unauthorized people from eavesdropping on the traffic. VPNs are widely used in corporate environments to extend a corporate network through encrypted connections made over the Internet, allowing employees to work outside the office and still securely connect to the corporate network. VPNs can be classified into several categories, including remote access, site-to-site, and mobile VPNs. VPNs are easy to use on devices such as phones, tablets, laptops, or PCs, and once configured, they run in the background, protecting users 24/7. VPNs are an important part of a total online security solution, creating a safer, more dynamic internet experience.