Summary
This technical overview introduces Zscaler Private Access (ZPA) as a zero trust alternative to traditional network-centric application access methods. Alex from Zscaler's Customer Success Engineering team explains how legacy VPN approaches place users directly on the network, creating lateral movement risks and poor user experiences while requiring complex infrastructure management. ZPA fundamentally reimagines application access by establishing inside-out connections through the Zero Trust Exchange, where app connectors near applications create outbound TLS tunnels to service edges, which then connect to authenticated users. This architecture ensures applications remain invisible to the internet, eliminating the attack surface associated with exposed firewall ports and internet-facing applications. The result is least-privileged access where users connect only to authorized applications without network access, making lateral movement impossible while simplifying third-party and contractor access scenarios.
