Which NIST publication is the standard for Zero Trust Architecture, focusing on security based on resources like users, services, and workflows instead of network boundaries?

The choice of NIST 800-207 as the correct answer is based on its specific focus on Zero Trust Architecture (ZTA). This publication establishes guidelines for implementing a security framework that shifts the emphasis from traditional perimeter-based security to a model where access and security are determined by the identity of users, the context of the request, the classification of resources, and the workflows involved. This aligns perfectly with the principles of Zero Trust, which prioritize the verification of all users and devices, regardless of their location, whether inside or outside a network boundary.

NIST 800-207 lays out the conceptual framework, essential components, and fundamental principles necessary for organizations looking to adopt a Zero Trust model. It emphasizes a data-centric security approach, highlighting the importance of safeguarding resources and services against potential threats without solely relying on the security of network perimeters.

In contrast, NIST 800-53 focuses on a comprehensive set of security and privacy controls for information systems across various sectors but does not specifically address Zero Trust principles. NIST 800-61 is concerned with the handling of computer security incidents, providing guidance on managing incidents rather than establishing architectural principles. Lastly, NIST 800-84 pertains to the assessment of security controls through testing and does not deal