A VPN (Virtual Private Network) creates an encrypted channel over a public network (typically the Internet) that lets a remote device access a company's internal resources as if it were physically on the corporate network. For years it was the standard for corporate remote work — the employee at home connects the VPN and sees the company's network.
The traditional VPN model has limitations that were exposed in the post-2020 era. It generally grants access to the entire network (not granular), consumes central resources (all remote employees route traffic through the corporate gateway), and does not continuously verify identity — once authenticated, access is assumed valid. Modern architectures based on Zero Trust (ZTNA, Zero Trust Network Access) replace VPN with granular per-application access, with continuous verification.
INFOS implements both classic VPN (for customers with simpler usage patterns or legacy systems) and modern ZTNA solutions. The decision depends on the risk profile, the sensitivity of the data, and operational maturity. For customers in migration, VPN and ZTNA frequently coexist during the transition period.