Advances in information technology have encouraged several economic sectors to adopt digital systems to improve operational effectiveness and service quality. Beauty salons are one industry that still handles customer bookings and data collection manually. Currently, Fatma Salon primarily uses WhatsApp and face-to-face interactions without a structured messaging format, which often results in incomplete appointment schedules and client data. The purpose of this research is to create a web-based salon information system with pre-filled messages and "click to chat" features, combined with a database and WhatsApp booking capabilities. System analysis, implementation, and testing are all part of the waterfall model process. Data collection was conducted through observation, interviews, and a literature review. By integrating with WhatsApp, the developed system enables a more organized booking process and provides information on salon services, prices, and location. Based on this research, this method can improve customer service effectiveness, simplify the booking process, simplify customer data processing, and promote the salon online
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