Re-Architecting Legacy Multi-Page Enterprise Applications into Scalable Single-Page Architectures: A Performance and Revenue Impact Study

Ifeanyi Chukwuka Okafor
Telvida International Systems Limited, Lagos, Nigeria

Abstract

Enterprise web applications built on legacy multi-page architectures (MPAs) frequently exhibit degraded performance, limited extensibility, and escalating maintenance burdens that constrain digital transformation initiatives. In response, many organizations are re-architecting MPAsinto Single-Page Application (SPA) architectures to improve responsiveness, modernize delivery pipelines, and enhance user experience. This study presents a design science–informed analytical synthesis of the technical and business implications of MPA-to-SPA modernization. Drawing on peer-reviewed literature, industry case evidence, and comparative benchmarking concepts, the paper consolidates reported findings on performance behavior (initial load, time-to-interactive, subsequent navigation latency, server request volume), user engagement outcomes (task completion, retention, reduced abandonment), and operational impacts (deployment agility, scalability, and maintenance overhead). The analysis further links these technical and user-facing improvements to business value drivers, including conversion efficiency, cost-to-serve reduction, support burden reduction, and time-to-market acceleration. In addition to summarizing benefits, the study characterizes key trade-offs and risks particularly client-side security exposure, API governance requirements, state management complexity, and data synchronization challenges and proposes practical migration pathways (incremental strangler-pattern adoption versus full rewrites) to manage risk and continuity. The findings indicate that SPA adoption can materially improve perceived performance and workflow efficiency after initial load, strengthen user satisfaction, and support measurable value realization when implemented with robust observability, security engineering, and disciplined architectural governance.

Keywords: MPA-to-SPA, web applications

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