A Virtual Private Network (VPN) creates an encrypted tunnel between a remote device and your office network or cloud resources, so traffic is protected on public Wi‑Fi and home internet. Site-to-site VPNs link branch offices; client VPNs let laptops reach file shares and internal apps. Modern alternatives include always-on VPN with Entra ID MFA or Zero Trust network access that checks device health per session. For Canadian teams, document who may use VPN, enforce MFA on VPN accounts, and split tunneling policies so video calls do not slow through the datacenter unless required by compliance.