Sarcouncil Journal of Multidisciplinary

Abstract: This article examines the evolution and implementation of Zero Trust security architectures within cloud-native microservices environments. As organizations shift from traditional perimeter-based security to distributed systems, Zero Trust principles have emerged as a dominant framework for securing cloud-native deployments. The intersection of DevSecOps practices with Zero Trust creates a powerful approach that integrates security throughout the development lifecycle while maintaining agility. Through analysis of implementation patterns, technological enablers, and case studies from financial services and retail sectors, this article identifies key success factors and persistent challenges in Zero Trust adoption. The financial and operational benefits of implementing Zero Trust architectures are substantial, with organizations reporting significant reductions in security incidents and faster response times. Despite implementation challenges including operational complexity, performance considerations, and organizational barriers, Zero Trust represents a necessary evolution in security approaches for increasingly distributed and dynamic environments. The transition toward identity-centric security models, enabled by service mesh technologies and automated certificate management, highlights a paradigm shift in how modern enterprises conceptualize security. This shift acknowledges that in cloud-native architectures, security must be intrinsic to application design rather than applied as an external layer, creating resilience against increasingly sophisticated threats that bypass traditional perimeter defenses.