This project report summarizes the development of an online booking system for Luna 3 Car Washing. The current system is outdated, requiring customers to book services in-person. The new web application will allow customers to view services, make and cancel bookings, and pay online. It will also give administrators tools to manage inventory, view payment reports, and collect customer feedback. The project followed a waterfall development process using HTML, CSS, PHP, MySQL and other tools. The final system provides a user-friendly interface for customers and additional functionality for administrators to improve business operations.