Nasrullah, Muchammad Fajri AmirulAde Nur Rachman Ade Nur Rachman2025-08-292025-07-21IEEEhttps://repository.polibatam.ac.id/handle/PL029/4212PT. Sumitomo Wiring System Batam Indonesia faced challenges in internal document management due to an outdated and unstructured system. This study aims to develop two additional features, Structure and System, within the SBI PORTAL web-based document management system to clarify organizational hierarchy and simplify internal configuration settings. The system was developed using the Waterfall method, which includes five phases: requirements analysis, system design, implementation, testing, and maintenance, utilizing ASP.NET, C#, and SQL Server with a three-tier architecture. Requirement analysis resulted in six functional and six non-functional requirements. Testing using the Black Box method confirmed that all scenarios met the specified requirements, including file validation and role-based access control. Initial monitoring by the internal team was conducted to ensure feature stability post-implementation. The inclusion of these features makes the system more structured and flexible in supporting document management and interdepartmental coordination, while also opening opportunities for future integration with external systems.otherASP.NET CoreC#Document Management SystemSQL ServerArticleNIM3312201102NIDN0002098803KODEPRODI55401#Teknik Informatika