Strengthening Hybrid SAP Enterprise Integration Through Federated Identity Assurance, Zero-Trust API Governance, and Resilient Data Protection Across SAP ECC and Cloud Environments

Abstract

Hybrid SAP integration requires a coherent security framework that protects enterprise communication between SAP ECC and SAP Cloud Platform while maintaining reliable access to business-critical information. This study examines the challenges of identity federation, API authorization, and data protection in distributed enterprise environments, with the objective of establishing an integrated approach to secure cross-platform connectivity. A mixed-method research design combines architectural analysis, security control assessment, and comparative evaluation of established authentication, authorization, encryption, and access management practices. The proposed framework integrates federated identity management, role-based access control, secure API gateways, encrypted data transmission, and centralized audit mechanisms to strengthen trust across system boundaries. The analysis identifies fragmented identity administration, inconsistent access policies, insufficient interface protection, and inadequate monitoring as significant sources of hybrid integration risk. A layered security model provides a structured means of reducing unauthorized access, improving traceability, and preserving data confidentiality and integrity during system interactions. The study further demonstrates the importance of aligning technical safeguards with enterprise governance, operational requirements, and established security principles. Its principal contribution lies in connecting identity assurance, interface security, and information protection within a unified architectural perspective rather than treating them as isolated controls. The findings offer practical guidance for SAP architects, security professionals, and enterprise technology researchers seeking dependable integration strategies. This approach supports scalable interoperability, strengthens organizational security governance, and establishes a foundation for evaluating secure hybrid SAP environments.