Securing Data in Transit Through Data-in-Transit Defender Architecture: A Zero Trust Approach for Modern Cloud Communication

Abstract

Securing data in transit across distributed cloud environments requires protection that extends beyond traditional TLS. Modern microservices, hybrid networks, and API-driven architectures face threats such as token replay, lateral movement, and payload tampering that channel encryption alone cannot prevent. The Data-in-Transit Defender Architecture (DITDA)—a Zero Trust–aligned model embeds security directly within the message using JSON Web Encryption (JWE). DITDA applies identity-bound claims, audience constraints, and layered payload encryption to ensure messages remain confidential, tamper-resistant, and verifiable across untrusted networks. The architecture integrates with API gateways, service meshes, and telemetry pipelines. Results demonstrate improved resilience, reduced attack surface, and enhanced compliance for enterprise-scale digital service delivery.