Zero trust architecture (ZTA) or perimeterless security is a design and implementation strategy of IT systems. The principle is that users and devices should not be trusted by default, even if they are connected to a privileged network such as a corporate LAN and even if they were previously verified., Zero Trust architecture (ZTA) is a security framework that authenticates every access request and proactively anticipates cyberattacks. Businesses adopt this framework to ensure only authorized users and devices can enter their networks, access business resources, and view sensitive data., Zero trust provides a collection of concepts and ideas designed to minimize uncertainty in enforcing accurate, least privilege per-request access decisions in information systems and services in the face of a network viewed as compromised., This data is essential for compliance and incident investigation. Core Zero Trust Architecture Components Zero Trust uses three main parts that work together: Policy Engine - This makes decisions about whether to allow or block access. It looks at user identity, device health, location, behavior, and risk scores., Zero Trust is a security framework that mandates stringent identity verification for every user and device attempting to access resources, regardless of whether they are inside or outside the organization’s network., Zero trust security moves cyber defenses from static, network-based perimeters to a focus on users, assets, and resources. Most organizations today are subject to data privacy regulations that emphasize granular access controls, a tenet of zero trust..