VPN stands for Virtual Private Network, primarily used for creating a secure connection over the internet. A VPN encrypts data transmitted between the user's device and the internet, protecting it from potential eavesdropping and cyber threats. It allows users to access restricted content and browse anonymously by masking the user's IP address. Businesses also use VPNs to enable remote employees to securely connect to internal networks. Overall, VPNs enhance privacy and security for online activities.