What is Zero Trust Architecture (ZTA)?
Zero Trust Architecture (ZTA) is a comprehensive cybersecurity framework that moves beyond traditional network perimeter defenses to treat every access request - whether from inside or outside the network - as untrusted until proven otherwise. According to National Institute of Standards and Technology (NIST) Special Publication 800-207, ZTA encompasses an enterprise’s policies, workflows, identity systems, devices, networks and resources in a unified architecture built on zero trust principles. The core tenets include treating every data source or service as a “resource”; securing all communications regardless of location; granting access on a per-session, least-privilege basis; continuously validating the trustworthiness of subjects, devices and signals; and monitoring for anomalies to adapt dynamically. Since ZTA addresses modern environments - cloud, mobile, IoT, remote work - it is not implemented as a one-size-fits-all architecture but rather deployed incrementally with hybrid models supported.
How Zero Trust Architecture Works
