International Journal of Science, Engineering and TechnologyAuthors: Narendra Reddy Burramukku
Abstract: Software-Defined Wide Area Networking (SD-WAN) has emerged as a key technology for addressing the limitations of traditional WAN architectures in modern, cloud-centric enterprise environments. By decoupling the control plane from the data plane and enabling centralized, policy-driven management, SD-WAN provides enhanced flexibility, scalability, and application-aware traffic optimization across heterogeneous transport networks. This paper presents a comprehensive review of SD-WAN technologies, focusing on architectural components, deployment models, performance considerations, monitoring mechanisms, and emerging research trends. The study analyzes core SD-WAN design principles, including centralized and distributed control, orchestration frameworks, edge device functionality, and integration with cloud and hybrid networks. Key performance challenges such as latency, jitter, packet loss, bandwidth optimization, security enforcement, and reliability are critically examined alongside monitoring and analytics approaches, including AI/ML-driven optimization. A comparative analysis of existing SD-WAN solutions highlights strengths, limitations, and practical deployment considerations in enterprise and service provider environments. Furthermore, the paper identifies open research challenges and future directions related to scalability, security, multi-cloud and edge integration, 5G convergence, digital twin–based management, and standardized interoperability frameworks. By synthesizing architectural, operational, and performance perspectives, this review provides a structured reference for researchers and practitioners seeking to design, deploy, and optimize next-generation SD-WAN solutions.
DOI: https://doi.org/10.5281/zenodo.18383868
