Hulul Aini, I., Agita Rindri, Y. and Syafrizal Zain, M. 2025. IMPLEMENTATION OF THE PROTOTYPE METHOD IN THE DEVELOPMENT OF A WEB-BASED ROOM RESERVATION SYSTEM WITH WHATSAPP NOTIFICATION INTEGRATION. KHARISMA Tech. 20, 2 (Dec. 2025), 161-175. DOI:https://doi.org/10.55645/kharismatech.v20i2.647.