Virtual Private Network - creates a secure connection over the internet between your device and a private network. Like having a private tunnel through a public highway.
Remote employees use VPN to securely access company files and systems as if they were in the office.
All four clouds offer managed VPN services that create encrypted IPsec tunnels between on-premises networks and cloud networks (site-to-site). AWS also offers a managed client VPN service for end-user remote access; Azure and GCP typically provide client access via point-to-site features on their VPN gateways, while OCI supports remote access via VPN Connect and partner/client solutions.