EXPLORING THE ADVANTAGES AND LIMITATIONS OF THE FEATURE-SLICED DESIGN ARCHITECTURAL METHODOLOGY IN COMMERCIAL FRONTEND PROJECTS

Abstract

The purpose of this study is to identify the advantages and limitations of the Feature-Sliced Design (FSD) architectural methodology in the development of commercial frontend applications, particularly using Angular-based projects that require a high degree of modularity, adaptability to change, and preservation of structural integrity throughout the software product life cycle. Special attention is given to assessing the feasibility of implementing this approach within small and medium-sized development teams operating in fast-paced environments with short release cycles and high demands for maintainable code.The research methodology is based on a structural analysis of the theoretical foundations of FSD, practical modeling of software architecture using an open-source ToDo application implemented according to the full hierarchical structure–app, processes, pages, widgets, features, entities, and shared–and a comparative analysis with leading alternative architectural approaches such as Atomic Design, MVVM, and MVC. The comparison was conducted based on criteria such as scalability, cohesion, module decoupling, reusability of components, structural transparency, and support for continuous integration.The scientific novelty lies in a comprehensive description of the core advantages of FSD, including business logic encapsulation, minimized inter-module dependencies, predictable structural hierarchy, and transparent component interaction logic. For the first time, the study systematizes the practical constraints associated with FSD implementation: the complexity of initial configuration, fragmented documentation, high architectural discipline requirements, and the onboarding difficulties for new developers.Conclusions. The study confirms the effectiveness of FSD as an architectural paradigm for building stable, scalable, and long-term maintainable frontend systems. However, successful adoption requires a well-prepared development team, comprehensive internal documentation, standardized structuring practices, and strict adherence to established architectural principles. The practical significance of the research lies in offering recommendations for integrating FSD into commercial web applications with elevated requirements for architectural manageability, maintainability, and scalability.