But VPNs have a built-in drawback: they can often create latency. People use VPNs when they need an extra layer of privacy and security on the Internet for this reason, VPNs are very popular with companies that have remote or globally distributed workforces.
VPNs encrypt Internet communications and keep user activity anonymous. A virtual private network (VPN) is an Internet security service that allows users to access the Internet as though they were connected to a private network.