International Journal of Computer
Trends and Technology

Research Article | Open Access | Download PDF

Volume 73 | Issue 6 | Year 2025 | Article Id. IJCTT-V73I6P107 | DOI : https://doi.org/10.14445/22312803/IJCTT-V73I6P107

Zero Trust Architectures in Modern Enterprises: Principles, Implementation Challenges, and Best Practices

Rajender Pell Reddy

Received Revised Accepted Published
28 Apr 2025 31 May 2025 16 Jun 2025 29 Jun 2025

Citation :

Rajender Pell Reddy, "Zero Trust Architectures in Modern Enterprises: Principles, Implementation Challenges, and Best Practices," International Journal of Computer Trends and Technology (IJCTT), vol. 73, no. 6, pp. 48-57, 2025. Crossref, https://doi.org/10.14445/22312803/IJCTT-V73I6P107

Abstract

Traditional perimeter-based security models are inadequate in the face of the fast-evolving digital technologies and the escalating complexity of cyber controls. Today’s enterprises demand building blocks that address the chaos created when distributed workforces work together and the adoption of the cloud, as well as the sophistication of attack vectors. Zero Trust Architecture or ZTA is an emerging aggressive approach, which is ‘never trust, always verify’, to all entities that access enterprise resources. In this paper, we first explore the foundational principles of ZTA, including continuous authentication, least privilege access, and reducing attack surfaces using micro-segmentation. The implementation delved into the practical challenges confronted with legacy systems integration, adoption of the problem solution to the scale limits, and the necessity for an organizational culture shift. In addition, it details what actionable best practices include, including using AI and machine learning for threat detection, implementing robust IAM, and cultivating a security-first mindset. This paper provides a comprehensive guide for enterprise adoption of or improvement to its Zero Trust strategies through a detailed examination of real-world case studies and emerging trends. In doing so, it provides the roadmap and guidance for building modern, resilient security postures that fulfil modern operational needs and satisfy regulatory requirements.

Keywords

Zero Trust Architecture, Cybersecurity, Enterprise security, Identity and Access Management, Machine learning.

References

[1] Eduardo B. Fernandez, and Andrei Brazhuk, “A Critical Analysis of Zero Trust Architecture (ZTA),” Computer Standards & Interfaces, vol. 89, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[2] Abdul Rahman et al., “Implementation of Zero Trust Security in MSME Enterprise Architecture: Challenges and Solutions,” Synchronous: Informatics Engineering Journal and Research, vol. 8, no. 3, pp. 2077-2087, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[3] Walter Määttä, “Exploring Critical Success Factors and Challenges to Zero Trust Architecture Transformation,” Bachelor’s Thesis, pp. 1-29, 2024.
[Google Scholar] [Publisher Link]
[4] What is Zero Trust Architecture?, Zscaler. [Online]. Available: zscaler.com
[5] Scott Rose et al., “Zero Trust Architecture,” NIST Special Publication, pp. 1-59, 2020.
[Google Scholar] [Publisher Link]
[6] Ankitkumar Tejani, and Vinoy Toshniwal, “Enhancing Urban Sustainability: Effective Strategies for Combining Renewable Energy with HVAC Systems,” ESP International Journal of Advancements in Science & Technology, vol. 1, no. 1, pp. 47-60, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[7] Top 7 Steps to Implement Zero Trust Architecture, Best Practices, Examples, and More, Proinf. [Online]. Available: proinf.com
[8] Rahul Jadhav, Zero Trust Architecture, Framework and Model – A Comprehensive Guide, 2024. [Online]. Available: accuknox.com
[9] Yuri Bobbert, and Jeroen Scheerder, “Zero Trust Validation: From Practical Approaches to Theory,” Scientific Journal of Research and Reviews, vol. 2, no. 5, pp. 830-848, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[10] Nahla Davies, Zero Trust in the Real World: Practical Implementation and Challenges, Secureworld, 2024. [Online]. Available: secureworld.io
[11] Yuri Bobbert, and Jeroen Scheerder, “Zero Trust Validation: From Practical Approaches to Theory,” Scientific Journal of Research and Reviews, vol. 2, no. 5, pp. 830-848, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[12] Alissa Irei, and Sharon Shea, What is the Zero-Trust Security Model?, Techtarget, 2022. [Online]. Available: techtarget.com
[13] Best Practices for Achieving Success with Zero Trust, AWS. [Online]. Available: docs.aws.amazon.com
[14] Naeem Firdous Syed et al., “Zero Trust Architecture (ZTA): A Comprehensive Survey,” IEEE Access, vol. 10, pp. 57143-57179, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[15] Challenges Faced by Organizations While Migrating to a Zero Trust Architecture, SecHard. [Online]. Available: sechard.com
[16] David Greenwood, “Applying the Principles of Zero-Trust Architecture to Protect Sensitive and Critical Data,” Network Security, vol. 2021, no. 6, pp. 7-9, 2021
[CrossRef] [Google Scholar] [Publisher Link]
[17] Zero Trust Architectures: Why They Are Essential for Modern Enterprises, Sphere. [Online]. Available: sphereco.com
[18] Yuanhang He et al., “A Survey on Zero Trust Architecture: Challenges and Future Trends,” Wireless Communications and Mobile Computing, vol. 2022, no. 1, pp. 1-13, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[19] Joel Mutiso, Zero Trust Architecture: Why It’s Becoming Essential for Modern Enterprises, 2024. [Online]. Available: linkedin.com
[20] Protect and Modernize Your Org with a Zero Trust Strategy, Microsoft. [Online]. Available: microsoft.com
[21] Jayanna Hallur, “From Monitoring to Observability: Enhacing System Reliability and Team Productivity,” International Journal of Science and Research, vol. 13, no. 10, pp. 602-606, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[22] Ankitkumar Tejani, and Vinay Toshniwal, “Differential Energy Consumption Patterns of HVAC Systems in Residential and Commercial Structures: A Comparative Study,” ESP International Journal of Advancements in Science & Technology, vol. 1, no. 3, pp. 47-58, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[23] 3 Common Challenges and Solutions when Implementing Zero Trust Networking Policies, Tufin, 2023. [Online]. Available: https://www.tufin.com/blog/3-challenges-and-solutions-implementing-zero-trust