The rapid development of digital technology has increased the importance of information systems in supporting business operations, including the drinking water refill industry. Asy Barokah, a refill service utilizing Reverse Osmosis (RO) technology, faces several challenges such as limited promotional activities, manual transaction recording, and inefficient communication with customers. This study aims to develop a web-based information system that improves promotional effectiveness, streamlines sales recording, and enhances operational management. The system was built using the Incremental method, allowing prioritized features to be implemented in stages. The resulting system provides a business profile page, digital promotion tools, online ordering, financial recording automation, and integrated operational management. The implementation demonstrates that the system effectively improves data accuracy, operational efficiency, and the quality of customer interactions. Overall, the developed system supports a more structured, responsive, and professional business process.
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