Beyond the Perimeter: The Impact of Zero Trust Security on Cybersecurity Resilience in U.S. Organizations

Abstract

The evolution of cloud computing, remote working, and Internet of Things (IoT) deployments has made the traditional perimeter-based security model more outdated than ever, and led to a paradigm shift towards Zero Trust Architecture (ZTA) in the United States public and private sectors. This review brings together existing literature from peer-reviewed and institutional origin to assess the impact of Zero Trust security on the cybersecurity resilience of organizations. The review builds on guidance provided by the National Institute of Standards and Technology (NIST) and federal policy documents, including Executive Order 14028 and OMB Memorandum M-22-09, and a body of IEEE, Elsevier, and MDPI indexed studies to highlight the concept's foundations, architecture, models, and empirical results of Zero Trust adoption. The analysis shows that ZTA provides a tangible benefit in reducing lateral effort, it has the potential to limit the breach blast radius, increase detection and response, and offers certain constraints in multi-cloud and industrial environments, including legacy infrastructure, identity governance complexity, workforce readiness, and interoperability. The review ends with recommendations for critical success factors and future research areas such as developing standardized maturity metrics, AI-enabled continuous authentication, and quantifiable resilience indicators for U.S. organizations.