Article Details
  • Published Online:
    April  2026
  • Product Name:
    The IUP Journal of Computer Sciences
  • Product Type:
    Article
  • Product Code:
    IJCS040226
  • DOI:
    10.71329/IUPJCS/2026.20.2.21-27
  • Author Name:
    Surender Singh
  • Availability:
    YES
  • Subject/Domain:
    Engineering
  • Download Format:
    PDF
  • Pages:
    21-27
Volume 25, Issue 2, April-June 2026
Evolution of Software-Defined Networking: From Legacy to Modern Infrastructure
Abstract

Software-defined networking (SDN) represents a fundamental transformation in network architecture, addressing the limitations inherent in traditional networking paradigms. The paper examines the evolutionary trajectory of SDN from its conceptual origins to its current implementation in modern infrastructure. It analyzes the architectural shift from legacy networks characterized by tightly-coupled control and data planes to contemporary SDN implementations featuring centralized control, programability, and dynamic configuration capabilities. The findings reveal that SDN market valuation reached $32.51 bn in 2024, with projected growth to $60.2 bn by 2028, reflecting significant enterprise adoption driven by demands for flexibility, automation, and enhanced security. The paper demonstrates how SDN has revolutionized network management and identifies emerging challenges in scalability, interoperability and security.

Introduction

The landscape of network infrastructure has undergone profound transformation over the past decade, driven by escalating demands for scalability, agility, and programability.