Analysis of approaches to deploying zero trust architecture

Abstract

Modern enterprises face increasingly complex cybersecurity challenges in the context of rapid digital transformation, growing threats in cyberspace, and the active implementation of the newest technologies. Traditional perimeter-based security strategies are no longer relevant in a world transformed by web technologies, mobility, cloud technologies, software as a service, and artificial intelligence, and are unable to effectively counter sophisticated targeted attacks. In view of this, the concept of zero trust is becoming increasingly important, forming a new paradigm of protection focused on users, resources, and data. It is based on the principle of “never trust, always verify” and is emerging as an essential foundation for building reliable cyber defense systems. However, despite the obvious advantages of this concept, the deployment of zero trust architecture is accompanied by significant difficulties from both a technical and organizational point of view. In addition, there is a problem associated with the lack of a comprehensive analysis of practical ways and specific approaches to its implementation, taking into account the specifics of the existing IT infrastructure. The aim of this paper is to conduct a comprehensive and in-depth analysis of existing zero trust architectures in order to identify effective practical ways of implementing them in the digital environment of enterprises. This paper provides a concise overview of the zero trust reference architecture, its key pillars, functional capabilities, and connections between the main logical components. The main focus is on analyzing four practical approaches to implementing zero trust architecture, specifically: with enhanced identity management, using microsegmentation, based on network infrastructure and software-defined perimeters, and based on secure access edge services. Based on experimental configurations of leading international institutions, various deployment options and their combinations were investigated, and their strengths, limitations, and conditions for effective application were determined. The results presented in the paper are intended to help security professionals understand the specifics of each architecture and choose the most optimal approaches (their complex application is possible) and technological solutions for their enterprises. This analysis can serve as a starting point for a phased and successful migration to a zero trust architecture, which opens up significant opportunities for building robust, reliable, and scalable systems for protecting corporate information resources.